Generation of an optical Schrödinger-cat-like state in a non-ideal cavity by injecting opposite-phase atomic dipoles
arXiv:1608.07920 · doi:10.1103/PhysRevA.94.023826
Abstract
We propose a method to generate an optical Schrödinger-cat-like state in a cavity in a substantial decoherence regime. Even when the cavity decay rate is considerably large, a cat-like state can be generated in a laser-like setting if the gain for the field is larger than the loss. Under the condition that opposite-phase atomic dipoles repeatedly traverse the cavity, the cavity field converges to a squeezed vacuum state in a steady state. A Schrödinger-cat-like state is then generated when a single photon decay occurs. The phase-space distribution of the cat state can be revealed in homodyne detection by using the decaying photon as a herald event. Quantum trajectory simulation was used to identify the conditions for the Schrödinger-cat-like state formation as well as to analyze the properties of those states. Based on these simulations, possible experiments are proposed within the reach of the current technology.
arXiv comment9 pages, 7 figures
References in corpus (21)
- Quantum computation with optical coherent states
- Generation of a superposition of odd photon number states for quantum information networks
- Reconstruction of non-classical cavity field states with snapshots of their decoherence
- Quantum metrology with entangled coherent states
- Macroscopically distinct quantum superposition states as a bosonic code for amplitude damping
- Schroedinger cat-like states by conditional measurements on a beam-splitter
- 30 years of squeezed light generation
- Quantum information processing for a coherent superposition state via a mixed entangled coherent channel
- Generation of Optical Coherent State Superpositions by Number-Resolved Photon Subtraction from Squeezed Vacuum
- Generation of large-amplitude coherent-state superposition via ancilla-assisted photon-subtraction
- Nonclassicality and decoherence of photon-subtracted squeezed states
- Weak force detection with superposed coherent states
- Generating "squeezed" superpositions of coherent states using photon addition and subtraction
- Homodyne tomography of a single photon retrieved on demand from a cavity-enhanced cold atom memory
- Observation of quantum interference between separated mechanical oscillator wavepackets
- Coherent Superposition States as Quantum Rulers
- Observation of sub-Poisson photon statistics in the cavity-QED microlaser
- Large amplitude coherent state superposition generated by a time-separated two-photon subtraction from a continuous wave squeezed vacuum
- Three-dimensional imaging of cavity vacuum with single atoms localized by a nanohole array
- Nonclassicality Phase-Space Functions: More Insight with Fewer Detectors
- Number-phase-squeezed few-photon state generated from squeezed atoms