Implementation of traveling odd Schrdinger cat states in circuit-QED
arXiv:1610.08695 · doi:10.3390/photonics3040057
Abstract
We propose a realistic scheme of generating a traveling odd Schrdinger cat state and a generalized entangled coherent state in circuit quantum electrodynamics (circuit-QED). A squeezed vacuum state is used as initial resource of nonclassical states, which can be created through a Josephson traveling-wave parametric amplifier, and travels through a transmission line. Because a single-photon subtraction from the squeezed vacuum gives with very high fidelity an odd Schrdinger cat state, we consider a specific circuit-QED setup consisting of the Josephson amplifier creating the traveling resource in a line, a beam-splitter coupling two transmission lines, and a single photon detector located at the end of the other line. When a single microwave photon is detected by measuring the excited state of a superconducting qubit in the detector, a heralded cat state is generated with high fidelity in the opposite line. For example, we show that the high fidelity of the outcome with the ideal cat state can be achieved with appropriate squeezing parameters theoretically. As its extended setup, we suggest that generalized entangled coherent states can be also built probabilistically and useful for microwave quantum information processing for error-correctable qudits in circuit-QED.
arXiv comment6 pages, 4 figures
References in corpus (45)
- 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
- Optimal Quantum Phase Estimation
- High-rate quantum cryptography in untrusted networks
- New class of quantum error-correcting codes for a bosonic mode
- Efficient Quantum Computation using Coherent States
- Dynamical Casimir effect in a Josephson metamaterial
- A widely tunable parametric amplifier based on a SQUID array resonator
- A Schrodinger Cat Living in Two Boxes
- Implementing a Universal Gate Set on a Logical Qubit Encoded in an Oscillator
- Fault-tolerant linear optical quantum computing with small-amplitude coherent states
- Hardware-efficient autonomous quantum error correction
- 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
- Entangled Fock states for Robust Quantum Optical Metrology, Imaging, and Sensing
- Review of Entangled Coherent States
- Conditional Production of Superpositions of Coherent States with Inefficient Photon Detection
- Single microwave-photon detector using an artificial -type three-level system
- Quantum state tomography of an itinerant squeezed microwave field
- Recent developments in photon-level operations on travelling light fields
- Robust concurrent remote entanglement between two superconducting qubits
- Suppression of the radiative decay of atomic coherence in squeezed vacuum
- Quantum nonlocality test for continuous-variable states with dichotomic observables
- Generating "squeezed" superpositions of coherent states using photon addition and subtraction
- Deterministic protocol for mapping a qubit to coherent state superpositions in a cavity
- Squeezing and quantum state engineering with Josephson traveling wave amplifiers
- Quantum dynamics of an electromagnetic mode that cannot contain N photons
- Violation of Bell's inequality using classical measurements and non-linear local operations
- Displacement of propagating squeezed microwave states
- Quantum Nonlocality for a Mixed Entangled Coherent State
- Fidelity for Multimode Thermal Squeezed States
- Coherence and multimode correlations from vacuum fluctuations in a microwave superconducting cavity
- Large amplitude coherent state superposition generated by a time-separated two-photon subtraction from a continuous wave squeezed vacuum
- Generating a Schrödinger-cat-like state via a coherent superposition of photonic operations
- Quantum phase estimation using path-symmetric entangled states
- Testing Bell inequalities with photon-subtracted Gaussian states
- Coherent State Topological Cluster State Production
- Efficient noiseless linear amplification for light fields with larger amplitudes
- Demonstrating Quantum Error Correction that Extends the Lifetime of Quantum Information
- Effects of squeezing on quantum nonlocality of superpositions of coherent states
- Advanced Concepts in Josephson Junction Reflection Amplifiers
- Deterministic amplification of Schroedinger cat states in circuit quantum electrodynamics
- Duality in entanglement of macroscopic states of light
Cited by in corpus (4)
- Microwave photonics with superconducting quantum circuits
- Generating optical cat states via quantum interference of multi-path free-electron-photons interactions
- Fast Generation of High-Fidelity Mechanical Non-Gaussian States via Additional Amplifier and Photon Subtraction
- A no-go result on observing quantum superpositions