簡易檢索 / 詳目顯示

回結果列表
研究生： 陳奕如
Chen, Yi-Ru
論文名稱： 利用加光子在壓縮真空態方式產生貓態
Generation of cat state via photon addition to the squeezed vacuum state
指導教授： 李瑞光
Lee, Ray-Kuang
口試委員: 陳應誠
Chen, Ying-Cheng
吳欣澤
Wu, Shin-Tza
賴暎杰
Lai, Yin-Chieh
林晏詳
Lin, Yen-Hsiang
學位類別： 博士
Doctor
系所名稱： 電機資訊學院 - 光電工程研究所
Institute of Photonics Technologies
論文出版年： 2023
畢業學年度： 112
語文別： 英文
論文頁數： 120
中文關鍵詞： 壓縮光 、先驅單光子源 、薛丁格貓 、量子態斷層掃描
外文關鍵詞： Squeezed light, heralded single photon sources, Schrödinger's cat, quantum state tomography
相關次數： 點閱：2  下載：0 
分享至:
查詢本校圖書館目錄 查詢臺灣博碩士論文知識加值系統 勘誤回報

    • 在通往光量子計算或量子資訊協議的道路上，準備離散變數（DV）和連續變數（CV）的混合式技術是必要的。 因此，配備高斯態和非高斯態以及進行高斯測量和非高斯測量，對於量子技術的未來應用是極重要的。 “薛丁格貓態”是混合離散變數和連續變數的產物之一，它是非高斯態，由兩個互相相反的相干態疊加。 除了基礎科學研究外，它還是量子計算、量子計量、量子隱形傳態或量子通訊的重要資源。

    在本論文中，我們是台灣第一個利用光參量振盪器（OPO）產生高斯態的壓縮光，並且開發出共模抑制比超過80 dB的平衡式零差偵測器。 此外，我們利用自發參數下轉換實現了非高斯態的單光子態，並且使用超導奈米線單光子偵測器來量測二階相關函數並且透過平衡式零差偵測器來重建維格納函數。

    很令我們有興趣的是混合 DV 和 CV 技術來產生薛丁格貓態。 我們沒有使用從壓縮光中減去光子的傳統方法，而是透過將一個單光子加入到壓縮真空態來首次實現光學“薛丁格貓”的實驗，從而產生高產生率。 這種突破性的技術可用來添加更多單光子，使大尺寸的貓成為可能。

    On the way toward the optical quantum computing or quantum communication protocols, it is essential to prepare the hybrid technique of discrete-variable (DV) and continuous-variable (CV). Thus, equipping the Gaussian state and non-Gaussian state and performing the Gaussian measurement and non-Gaussian measurement are crucial to apply in the future for the quantum technology. The ‘Schrödinger cat state’ which is a non-Gaussian state and a superposition of two opposite coherent states is one of the mixtures of DV and CV. Apart from fundamental science research, it is an important resource for quantum computation, quantum metrology, and quantum teleportation or quantum communication.

    In this thesis, we first generate the Gaussian state of squeezed light via an optical parametric oscillator (OPO) in Taiwan and develop the balanced homodyne detecter with more than 80 dB common mode rejection ratio. In addition, we implement the non-Gaussian state of a heralded single-photon state with spontaneous parametric down-conversion and perform the superconducting nanowire single-photon detector to measure the second-order correlation function and reconstruct the Wigner function via balanced homodyne detecter.

    It is of interest to us to combine DV and CV techniques to produce the Schrödinger cat state. Instead of using the traditional method of photon subtraction from squeezed light, we report the first experimental realization of optical ‘Schrödinger cats’ by adding one photon to a squeezed vacuum state, resulting in a high generation rate. This groundbreaking technique could be used to add more photons to pave the way toward a larger cat size.

    Acknowledgments ii 摘要vii Abstract ix 1 Introduction 1 2 Basics of quantum optics 5 2.1 Quantization of the electromagnetic field . . . . . . . . . . . . 5 2.1.1 Quadrature Operator . . . . . . . . . . . . . . . . . . . . 6 2.1.2 Heisenberg Uncertainty Principle . . . . . . . . . . . . 7 2.2 Quantum state representations . . . . . . . . . . . . . . . . . . 8 2.2.1 Phase Space representation - Wigner function . . . . . 8 2.2.2 Ball-on-stick representation . . . . . . . . . . . . . . . . 9 2.2.3 Sideband representation . . . . . . . . . . . . . . . . . . 10 2.3 Quantum states of light . . . . . . . . . . . . . . . . . . . . . . . 12 2.3.1 Fock state . . . . . . . . . . . . . . . . . . . . . . . . . . 12 2.3.2 Vacuum state . . . . . . . . . . . . . . . . . . . . . . . . 14 2.3.3 Coherent state . . . . . . . . . . . . . . . . . . . . . . . . 14 2.3.4 Squeezed state . . . . . . . . . . . . . . . . . . . . . . . 16 2.3.5 Thermal state . . . . . . . . . . . . . . . . . . . . . . . . 17 2.3.6 Cat state . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 2.4 Quantum measurement . . . . . . . . . . . . . . . . . . . . . . 19 2.4.1 Positive operator valued measures (POVM) . . . . . . 20 2.4.2 Single photon detectors . . . . . . . . . . . . . . . . . . 21 2.4.3 Balanced homodyne detection (BHD) . . . . . . . . . . 21 2.5 Quantum States Tomography (QST) . . . . . . . . . . . . . . . 23 2.5.1 Maximum likelihood estimation (MaxLik) . . . . . . . 24 3 Generation and Detection of Squeezed State 27 3.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 3.2 Experimental setups . . . . . . . . . . . . . . . . . . . . . . . . 28 3.2.2 Second harmonic generation (SHG) . . . . . . . . . . . 29 3.2.3 Optical parametric oscillator (OPO) . . . . . . . . . . . 31 3.2.4 Mach-Zehnder interferometer (MZ) . . . . . . . . . . . 32 3.2.5 Balanced homodyne detection (BHD) . . . . . . . . . . 33 3.3 Squeezing level . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 3.3.1 Optical loss . . . . . . . . . . . . . . . . . . . . . . . . . 37 3.3.2 Phase noise . . . . . . . . . . . . . . . . . . . . . . . . . 39 3.4 Squeezed state control . . . . . . . . . . . . . . . . . . . . . . . 40 3.4.1 Pump phase . . . . . . . . . . . . . . . . . . . . . . . . . 40 3.4.2 Measurement phase . . . . . . . . . . . . . . . . . . . . 41 3.5 Experimental results . . . . . . . . . . . . . . . . . . . . . . . . 42 3.5.1 Squeezing level . . . . . . . . . . . . . . . . . . . . . . . 43 3.5.2 Squeezed state tomography . . . . . . . . . . . . . . . . 44 Phase calibration . . . . . . . . . . . . . . . . . . . . . . 45 Normalization . . . . . . . . . . . . . . . . . . . . . . . . 45 Reconstruction . . . . . . . . . . . . . . . . . . . . . . . 46 3.5.3 MaxLik vs. ML . . . . . . . . . . . . . . . . . . . . . . . 47 3.5.4 Wigner flow . . . . . . . . . . . . . . . . . . . . . . . . . 49 4 Generation and Detection of Single Photon State 53 4.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53 4.2 Experimental setups . . . . . . . . . . . . . . . . . . . . . . . . 53 4.2.1 Spontaneous parametric down-conversion (SPDC) . . 55 4.2.2 Filter cavities (FCs) . . . . . . . . . . . . . . . . . . . . . 55 Sample and hold (S&H) . . . . . . . . . . . . . . . . . . 57 4.2.3 Superconducting nanowire single-photon detector (SNSPD) 59 4.2.4 Time-to-digital converter (TDC) . . . . . . . . . . . . . 61 4.3 Experimental results . . . . . . . . . . . . . . . . . . . . . . . . 62 4.3.1 Intensity cross-correlation function G(2)s,i (τ) . . . . . . . 62 4.3.2 Intensity auto-correlation function g(2)s,s (τ) . . . . . . . . 65 4.3.3 Single-photon state tomography . . . . . . . . . . . . . 68 Data acquisition . . . . . . . . . . . . . . . . . . . . . . . 68 Data processing . . . . . . . . . . . . . . . . . . . . . . . 68 5 Generation and Detection of Cat State 75 5.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75 5.2 Theory of cat state generation . . . . . . . . . . . . . . . . . . . 75 5.2.1 Photon subtraction from squeezed vacuum state . . . . 75 5.2.2 Photon addition to squeezed vacuum state . . . . . . . 77 5.3 Experimental setups . . . . . . . . . . . . . . . . . . . . . . . . 79 5.4 Experimental results . . . . . . . . . . . . . . . . . . . . . . . . 83 5.4.1 Cat state tomography . . . . . . . . . . . . . . . . . . . 83 6 Conclusion and Outlook 89 6.1 Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89 6.2 Pathfinding research . . . . . . . . . . . . . . . . . . . . . . . . 90 A Programs 93 A.1 Arduino . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93 A.1.1 TTL signal . . . . . . . . . . . . . . . . . . . . . . . . . . 93 A.2 Python . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100 A.2.1 Frequency filtering with Pykat . . . . . . . . . . . . . . 100 A.2.2 Get histogram for G(2)s,i measurement by QuTAG . . . . 103 A.2.3 Get timstamps for g(2)s,s measurement by QuTAG . . . . 109 Bibliography 113

    [AAS10] Itai Afek, Oron Ambar, and Yaron Silberberg. “High-NOON States by Mixing Quantum and Classical Light”. In: Science 328.5980 (2010), pp. 879–881.
    [Aku+06] Tomotada Akutsu et al. “Contributions of oscillator noises to the sensitivity of TAMA300”. In: Journal of Physics: Conference Series. Vol. 32. 1. IOP Publishing. 2006, p. 105.
    [Ari+22] Naoki Aritomi et al. “Demonstration of length control for a filter cavity with coherent control sidebands”. In: Phys. Rev. D 106 (10 2022), p. 102003.
    [Asa+17] Warit Asavanant et al. “Generation of highly pure Schrödinger’s cat states and real-time quadrature measurements via optical filtering”. In: Opt. Express 25.26 (2017), pp. 32227–32242.
    [Asa+19] Warit Asavanant et al. “Generation of time-domain-multiplexed two-dimensional cluster state”. In: Science 366.6463 (2019), pp. 373–376.
    [ATF06] Takao Aoki, Go Takahashi, and Akira Furusawa. “Squeezing at 946nm with periodically poled KTiOPO4”. In: Opt. Express 14.15 (2006), pp. 6930–6935.
    [BF14] Daniel David Brown and Andreas Freise. Finesse. You can download the binaries and source code at http://www.gwoptics.org/finesse. May 2014.
    [BK98] Samuel L. Braunstein and H. J. Kimble. “Teleportation of Continuous Quantum Variables”. In: Phys. Rev. Lett. 80 (4 1998), pp. 869–872.
    [Bla01] Eric D. Black. “An introduction to Pound–Drever–Hall laser frequency stabilization”. In: American Journal of Physics 69.1 (Jan.2001), pp. 79–87.
    [Bou+21] J. Eli Bourassa et al. “Blueprint for a Scalable Photonic Fault-Tolerant Quantum Computer”. In: Quantum 5 (Feb. 2021), p. 392.
    [Bou+99] B. Boulanger et al. “Optical studies of laser-induced gray-tracking in KTP”. In: IEEE Journal of Quantum Electronics 35.3 (1999), pp. 281–286.
    [Bra+19] William F. Braasch et al. “Wigner current for open quantum systems”. In: Phys. Rev. A 100 (1 2019), p. 012124.
    [Bre98] Gerd Breitenbach. “Quantum state reconstruction of classical and nonclassical light and a cryogenic opto-mechanical sensor for high-precision interferometry”. In: (Jan. 1998).
    [Bru+21] Cédric Bruynsteen et al. “Integrated balanced homodyne photonic–electronic detector for beyond 20GHz shot-noise-limited measurements”. In: Optica 8.9 (2021), pp. 1146–1152.
    [BT56] R. HANBURY BROWN and R. Q. TWISS. “Correlation between Photons in two Coherent Beams of Light”. In: Nature 177.4497 (1956), pp. 27–29.
    [CI+20] P. Campagne-Ibarcq et al. “Quantum error correction of a qubit encoded in grid states of an oscillator”. In: Nature 584.7821 (2020), pp. 368–372.
    [CYH12] Chih-Sung Chuu, G. Y. Yin, and S. E. Harris. “A miniature ultrabright source of temporally long, narrowband biphotons”. In: Applied Physics Letters 101.5 (Aug. 2012). 051108.
    [Dak+97] M. Dakna et al. “Generating Schrödinger-cat-like states by means of conditional measurements on a beam splitter”. In: Phys. Rev. A 55 (4 1997), pp. 3184–3194.
    [DBD04] Marc Dubois, Kent C. Burr, and Thomas E. Drake. “Laser phase noise reduction for industrial interferometric applications”. In: Appl. Opt. 43.22 (2004), pp. 4399–4407.
    [DKW98] Mohammed Dakna, Ludwig Knöll, and Dirk-Gunnar Welsch. “Photon-added state preparation via conditional measurement on a beam splitter”. In: Optics Communications 145.1 (1998), pp. 309–321.
    [DMM22] Sheila E. Dwyer, Georgia L. Mansell, and Lee McCuller. “Squeezing in GravitationalWave Detectors”. In: Galaxies 10.2 (2022).
    [ENP19] Miller Eaton, Rajveer Nehra, and Olivier Pfister. “Non-Gaussian and Gottesman–Kitaev–Preskill state preparation by photon catalysis”. In: New Journal of Physics 21.11 (2019), p. 113034.
    [FL11] A. Furusawa and P. van Loock. Quantum Teleportation and Entanglement: A Hybrid Approach to Optical Quantum Information Processing. Wiley, 2011.
    [Flü+19] C. Flühmann et al. “Encoding a qubit in a trapped-ion mechanical oscillator”. In: Nature 566.7745 (2019), pp. 513–517.
    [Fre+06] Matthias Freyberger et al. “Quantized Field Effects”. In: Springer Handbook of Atomic, Molecular, and Optical Physics. Ed. by Gordon Drake. New York, NY: Springer New York, 2006, pp. 1141–1165.
    [Fur+98] Akira Furusawa et al. “Unconditional quantum teleportation”. In: science 282.5389 (1998), pp. 706–709.
    [GHP14] Stefan Hild Giles Hammond and Matthew Pitkin. “Advanced technologies for future ground-based, laser-interferometric gravitational wave detectors”. In: Journal of Modern Optics 61.sup1 (2014), S10–S45.
    [GKP01] Daniel Gottesman, Alexei Kitaev, and John Preskill. “Encoding a qubit in an oscillator”. In: Phys. Rev. A 64 (1 2001), p. 012310.
    [Gla63] Roy J. Glauber. “Coherent and Incoherent States of the Radiation Field”. In: Phys. Rev. 131 (6 1963), pp. 2766–2788.
    [God+08] Keisuke Goda et al. “Generation of a stable low-frequency squeezed vacuum field with periodically poled KTiOPO4 at 1064 nm”. In: Opt. Lett. 33.2 (2008), pp. 92–94.
    [HSB08] Ulrike Herzog, Matthias Scholz, and Oliver Benson. “Theory of biphoton generation in a single-resonant optical parametric oscillator far below threshold”. In: Phys. Rev. A 77 (2 2008), p. 023826.
    [Hsi+22a] Hsien-Yi Hsieh et al. “Direct Parameter Estimations from Machine Learning-Enhanced Quantum State Tomography”. In: Symmetry 14.5 (2022).
    [Hsi+22b] Hsien-Yi Hsieh et al. “Extract the Degradation Information in Squeezed States with Machine Learning”. In: Phys. Rev. Lett. 128 (7 2022), p. 073604.
    [JMS11] Jaewoo Joo,William J. Munro, and Timothy P. Spiller. “Quantum Metrology with Entangled Coherent States”. In: Phys. Rev. Lett. 107 (8 2011), p. 083601.
    [JRT91] J. C. Jacco, D. R. Rockafellow, and E. A. Teppo. “Bulk-darkening threshold of flux-grown KTiOPO4”. In: Opt. Lett. 16.17 (1991), pp. 1307–1309.
    [Kum+11] S. Chaitanya Kumar et al. “High-efficiency, multicrystal, singlepass, continuous-wave second harmonic generation”. In: Opt. Express 19.12 (2011), pp. 11152–11169.
    [Kum+12] R. Kumar et al. “Versatile wideband balanced detector for quantum optical homodyne tomography”. In: Optics Communications 285.24 (2012), pp. 5259–5267.
    [Lee+11] Noriyuki Lee et al. “Teleportation of Nonclassical Wave Packets of Light”. In: Science 332.6027 (2011), pp. 330–333.
    [LJ13] Seung-Woo Lee and Hyunseok Jeong. “Near-deterministic quantum teleportation and resource-efficient quantum computation using linear optics and hybrid qubits”. In: Phys. Rev. A 87 (2 2013), p. 022326.
    [LR09] A. I. Lvovsky and M. G. Raymer. “Continuous-variable optical quantum-state tomography”. In: Rev. Mod. Phys. 81 (1 2009), pp. 299–332.
    [LRH08] A. P. Lund, T. C. Ralph, and H. L. Haselgrove. “Fault-Tolerant Linear Optical Quantum Computing with Small-Amplitude Coherent States”. In: Phys. Rev. Lett. 100 (3 2008), p. 030503.
    [Lvo04] A I Lvovsky. “Iterative maximum-likelihood reconstruction in quantum homodyne tomography”. In: Journal of Optics B: Quantum and Semiclassical Optics 6.6 (2004), S556–S559.
    [Mad+22] Lars S. Madsen et al. “Quantum computational advantage with a programmable photonic processor”. In: Nature 606.7912 (2022), pp. 75–81.
    [McC+20] L. McCuller et al. “Frequency-Dependent Squeezing for Advanced LIGO”. In: Phys. Rev. Lett. 124 (17 2020), p. 171102.
    [McK+08] Kirk McKenzie et al. “Squeezing in the audio gravitational wave detection band”. PhD thesis. AustralianNational University, 2008.
    [Mil+97] G. D. Miller et al. “42%-efficient single-pass cw second-harmonic generation in periodically poled lithium niobate”. In: Opt. Lett. 22.24 (1997), pp. 1834–1836.
    [MJK08] P. Marek, H. Jeong, and M. S. Kim. “Generating “squeezed” superpositions of coherent states using photon addition and subtraction”. In: Phys. Rev. A 78 (6 2008), p. 063811.
    [Mor13] Olivier Morin. “Non-Gaussian states and measurements for quantum
    information”. Theses. Université Pierre et Marie Curie - Paris VI, Dec. 2013.
    [Mun+02] W. J. Munro et al. “Weak-force detection with superposed coherent states”. In: Phys. Rev. A 66 (2 2002), p. 023819.
    [Neh+22] Rajveer Nehra et al. “Few-cycle vacuum squeezing in nanophotonics”. In: Science 377.6612 (2022), pp. 1333–1337.
    [Our+06] Alexei Ourjoumtsev et al. “Generating Optical Schrödinger Kittens for Quantum Information Processing”. In: Science 312.5770 (2006), pp. 83–86.
    [Our+09] Alexei Ourjoumtsev et al. “Preparation of non-local superpositions of quasi-classical light states”. In: Nature Physics 5.3 (2009), pp. 189–192.
    [PCK92] E. S. Polzik, J. Carri, and H. J. Kimble. “Atomic spectroscopy with squeezed light for sensitivity beyond the vacuum-state limit”. In: Applied Physics B 55.3 (1992), pp. 279–290.
    [Pla00] Max Planck. “On the theory of the energy distribution law of the normal spectrum”. In: Verh. Deut. Phys. Ges 2.237 (1900), pp. 237–245.
    [Por+05] Alberto Porzio et al. “Pattern-function quantum tomography: a tool for experimentally investigating the real state of radiation fields”. In: Quantum Communications and Quantum Imaging III. Ed. by Ronald E. Meyers and Yanhua Shih. Vol. 5893. International Society for Optics and Photonics. SPIE, 2005, p. 589307.
    [Ral+03] T. C. Ralph et al. “Quantum computation with optical coherent states”. In: Phys. Rev. A 68 (4 2003), p. 042319.
    [San+10] Nicolas Sangouard et al. “Quantum repeaters with entangled coherent states”. In: J. Opt. Soc. Am. B 27.6 (2010), A137–A145.
    [Sch17] Roman Schnabel. “Squeezed states of light and their applications in laser interferometers”. In: Physics Reports 684 (2017). Squeezed states of light and their applications in laser interferometers, pp. 1–51.
    [Sch18] Emil Schreiber. “Gravitational-wave detection beyond the quantum shot-noise limit: the integration of squeezed light in GEO 600”. In: (2018).
    [Sch35] E. Schrödinger. “Die gegenwärtige Situation in der Quantenmechanik”. In: Naturwissenschaften 23.48 (1935), pp. 807–812.
    [SKB09] Matthias Scholz, Lars Koch, and Oliver Benson. “Analytical treatment of spectral properties and signal–idler intensity correlations for a double-resonant optical parametric oscillator far below threshold”. In: Optics Communications 282.17 (2009), pp. 3518–
    3523.
    [SKR13] Ole Steuernagel, Dimitris Kakofengitis, and Georg Ritter. “Wigner Flow Reveals Topological Order in Quantum Phase Space Dynamics”. In: Phys. Rev. Lett. 110 (3 2013), p. 030401.
    [Sla+19] Oliver Slattery et al. Background and Review of Cavity-Enhanced Spontaneous Parametric Down-Conversion. en. 2019.
    [Slu+85] R. E. Slusher et al. “Observation of Squeezed States Generated by Four-Wave Mixing in an Optical Cavity”. In: Phys. Rev. Lett. 55 (22 1985), pp. 2409–2412.
    [Smi+93] D. T. Smithey et al. “Measurement of the Wigner distribution and the density matrix of a light mode using optical homodyne tomography: Application to squeezed states and the vacuum”. In: Phys. Rev. Lett. 70 (9 1993), pp. 1244–1247.
    [Ste12] Michael Steve Stefszky. “Generation and detection of low-frequency squeezing for gravitational-wave detection”. PhD thesis. Australian National University, 2012.
    [Syc+17] Demid V. Sychev et al. “Enlargement of optical Schrödinger’s cat states”. In: Nature Photonics 11.6 (2017), pp. 379–382.
    [Tak+08] Hiroki Takahashi et al. “Generation of Large-Amplitude Coherent-State Superposition via Ancilla-Assisted Photon Subtraction”. In: Phys. Rev. Lett. 101 (23 2008), p. 233605.
    [Tay+13] Michael A. Taylor et al. “Biological measurement beyond the quantum limit”. In: Nature Photonics 7.3 (2013), pp. 229–233.
    [Vah+16] Henning Vahlbruch et al. “Detection of 15 dB Squeezed States of Light and their Application for the Absolute Calibration of Photoelectric Quantum Efficiency”. In: Phys. Rev. Lett. 117 (11 2016),
    p. 110801.
    [VSG10] H. M. Vasconcelos, L. Sanz, and S. Glancy. “All-optical generation of states for “Encoding a qubit in an oscillator””. In: Opt. Lett. 35.19 (2010), pp. 3261–3263.
    [Wig32] E. Wigner. “On the Quantum Correction For Thermodynamic Equilibrium”. In: Phys. Rev. 40 (5 1932), pp. 749–759.
    [Wil+98] B.Willke et al. “Spatial and temporal filtering of a 10-W Nd:YAG laser with a Fabry–Perot ring-cavity premode cleaner”. In: Opt. Lett. 23.21 (1998), pp. 1704–1706.
    [WM08] D.F. Walls and G.J. Milburn. Quantum Optics. Springer Berlin Heidelberg, 2008.
    [WT18] Daniel J.Weigand and Barbara M. Terhal. “Generating grid states from Schrödinger-cat states without postselection”. In: Phys. Rev. A 97 (2 2018), p. 022341.
    [WXK87] Ling-An Wu, Min Xiao, and H. J. Kimble. “Squeezed states of light from an optical parametric oscillator”. In: J. Opt. Soc. Am. B 4.10 (1987), pp. 1465–1475.
    [Yan+19] Popo Yang et al. “The Wigner flow on the sphere”. In: Physica Scripta 94.4 (2019), p. 044001.
    [Yan+23] Ryotatsu Yanagimoto et al. “Quantum Nondemolition Measurements with Optical Parametric Amplifiers for Ultrafast Universal Quantum Information Processing”. In: PRX Quantum 4 (1 2023), p. 010333.
    [Zha+03] T. C. Zhang et al. “Quantum teleportation of light beams”. In: Phys. Rev. A 67 (3 2003), p. 033802.
    [Zha+20] Yuhang Zhao et al. “Frequency-Dependent Squeezed Vacuum Source for Broadband Quantum Noise Reduction in Advanced Gravitational-Wave Detectors”. In: Phys. Rev. Lett. 124 (17 2020), p. 171101.
    [Zha+21] Y. Zhang et al. “Squeezed light from a nanophotonic molecule”. In: Nature Communications 12.1 (2021), p. 2233.
    [Zho+21] Han-Sen Zhong et al. “Phase-Programmable Gaussian Boson Sampling Using Stimulated Squeezed Light”. In: Phys. Rev. Lett. 127 (18 2021), p. 180502.
    [ZVB04a] Alessandro Zavatta, Silvia Viciani, and Marco Bellini. “Quantumto-Classical Transition with Single-Photon-Added Coherent States of Light”. In: Science 306.5696 (2004), pp. 660–662.
    [ZVB04b] Alessandro Zavatta, Silvia Viciani, and Marco Bellini. “Tomographic reconstruction of the single-photon Fock state by high-frequency homodyne detection”. In: Phys. Rev. A 70 (5 2004), p. 053821.

    QR CODE