Quantum computation with optical coherent states

Abstract

We show that quantum computation circuits using coherent states as the logical qubits can be constructed from simple linear networks, conditional photon measurements and "small" coherent superposition resource states.

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• Boosting the generation rate of squeezed single-photon states by generalized photon subtraction
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• Witnessing negativity of Wigner function by estimating fidelities of cat-like states from homodyne measurements
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• Harnessing two-photon dissipation for enhanced quantum measurement and control
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• Preparation of high fidelity entangled cat states with composite pulses
• Effective generation of cat and kitten states
• Non-producibility of arbitrary non-Gaussian states using zero-mean Gaussian states and partial photon number resolving detection
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• Significance of Fidelity Deviation in Continuous Variable Teleportation
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• Comparison of Controlled-Z operation and beam-splitter transformation for generation of squeezed Fock states by measurement
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• Application and quantum properties of superpositions of oppositely squeezed states
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• Control of continuous-mode single-photon states: a review
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• Amplitude-squared squeezing of Schrödinger cat states via Postselected von Neumann Measurement
• Unveiling and veiling a Schrödinger cat state from the vacuum