Lectures on Quantum Optics and Quantum Information

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A last Level of Correlations : Non-locality Violation of a Bell Inequality The multiple correlations cannot be described by a local hidden variables Fields with Gaussian statistics (Positive Wigner function) : can always be mapped into stochastic equations for fluctuating fields, which constitute the local « hidden » variables accounting for all the observed quantities… Non-Gaussian states with Negative Wigner functions A strongly active field: Schrodinger cat states, CV qubit, distillation Hybrid Schemes Requires non-Gaussian measurements or non-Gaussian ressources
A last Level of Correlations : Non-locality Violation of a Bell Inequality The multiple correlations cannot be described by a local hidden variables Fields with Gaussian statistics (Positive Wigner function) : can always be mapped into stochastic equations for fluctuating fields, which constitute the local « hidden » variables accounting for all the observed quantities… Single-photon subtractions Non-Gaussian states with Negative Wigner functions A strongly active field: Schrodinger cat states, CV qubit, distillation Hybrid Schemes Requires non-Gaussian measurements or non-Gaussian ressources Requires efficiency>95%, 6dB squeezing, high-purity of the initial state… And gives at most S=2.05 R. Garcia-Patron et al., Phys. Rev. Lett. 93, 130409 (2004); and many other proposals since then…
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Lectures on Quantu
Page 3 and 4:
Content of the lectures Lecture 1 I
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Lecture 1 • Light quantization, d
Page 7 and 8: Quantization of the Electromagnetic
Page 9 and 10: Two Possible Descriptions Quantizat
Page 11 and 12: Quantization of the electromagnetic
Page 13 and 14: Quantum Continuous-Variables Quanti
Page 15 and 16: Q A Q Quantum Continuous-Variables
Page 17 and 18: Quantum Continuous-Variables Quanti
Page 19 and 20: Measuring Optical Continuous-Variab
Page 21 and 22: Measuring Optical Continuous-Variab
Page 23 and 24: The Wigner Function For continuous-
Page 25 and 26: The Wigner Function: Function: Nega
Page 27 and 28: Interlude: CV for Atomic Ensembles
Page 29 and 30: Lecture 1 • Light quantization, d
Page 31 and 32: How to Generate Squeezed Light ? Sq
Page 33 and 34: CW Parametric Amplification in a Ca
Page 35 and 36: CW Parametric Amplification in a Ca
Page 37 and 38: Effect of Losses on Squeezed Light
Page 39 and 40: Effect of Losses on Squeezed Light
Page 41 and 42: Classical Correlations of Light Bea
Page 43 and 44: « One Quadrature » Criteria Two b
Page 45 and 46: Quantum Intensity Correlations With
Page 47 and 48: « Two Quadratures » Criteria A do
Page 49 and 50: « Two Quadratures » Criteria A do
Page 51 and 52: How to Generate CV Entanglement ? E
Page 53 and 54: How to Generate CV Entanglement ? W
Page 55 and 56: Quantum Teleportation 1- Measuremen
Page 57: Multimode Entanglement : Cluster St
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Lectures on Quantum Optics and Quantum Information

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