Generating the Schrodinger cat state in a nanomechanical resonator coupled to a charge qubit
arXiv:1405.3129 · doi:10.1002/andp.201400094
Abstract
We propose a scheme for generating the Schrödinger cat state based on geometric operations by a nanomechanical resonator coupled to a superconducting charge qubit. The charge qubit, driven by two strong classical fields, interacts with a high-frequency phonon mode of the nanomechanical resonator. During the operation, the charge qubit undergoes no real transitions, while the phonon mode of the nanomechanical resonator is displaced along different paths in the phase space, dependent on the states of the charge qubit, which yields the Schrödinger cat state. The robustness of the scheme is justified by considering noise from environment, and the feasibility of the scheme is discussed.
arXiv comment6 pages 3 figures
References in corpus (24)
- Charge insensitive qubit design derived from the Cooper pair box
- Hybrid quantum circuits: Superconducting circuits interacting with other quantum systems
- Models of Wave-function Collapse, Underlying Theories, and Experimental Tests
- Resolving photon number states in a superconducting circuit
- Superconducting qubit in waveguide cavity with coherence time approaching 0.1ms
- Effective Hamiltonian Theory and Its Applications in Quantum Information
- Colloquium: Quantum interference of clusters and molecules
- Unconventional geometric quantum computation
- Superconducting Qubit Storage and Entanglement with Nanomechanical Resonators
- Large quantum superpositions of a levitated nanodiamond through spin-optomechanical coupling
- Macroscopicity of Mechanical Quantum Superposition States
- Ground state cooling of mechanical resonators
- Qubit-induced phonon blockade as a signature of quantum behavior in nanomechanical resonators
- Generation of Squeezed States of Nanomechanical Resonators by Reservoir Engineering
- Probing tiny motions of nanomechanical resonators: classical or quantum mechanical?
- Field squeeze operators in optical cavities with atomic ensembles
- Cooling of Nanomechanical Resonator Based on Periodical Coupling to Cooper Pair Box
- Unconventional geometric quantum phase gates with a cavity QED system
- Quantum state preparation of a mechanical resonator using an optomechanical geometric phase
- Spin Fluctuation in Heavy Fermion CeRu_2Si_2
- Geometric phase kickback in a mesoscopic qubit-oscillator system
- Finite-time quantum-to-classical transition for a Schroedinger-cat state
- Fast geometric gate operation of superconducting charge qubits in circuit QED
- An unconventional geometric phase gate with two nonresonant quantum dots trapped in a photonic crystal cavity