Nanomechanical Quantum Memory for Superconducting Qubits
arXiv:quant-ph/0410029 · doi:10.1103/PhysRevA.72.010301
Abstract
Many protocols for quantum computation require a quantum memory element to store qubits. We discuss the accuracy with which quantum states prepared in a Josephson junction qubit can be stored in a nanoelectromechanical resonator and then transfered back to the junction. We find that the fidelity of the memory operation depends on both the junction-resonator coupling strength and the location of the state on the Bloch sphere. Although we specifically focus on a large-area, current-biased Josesphson junction phase qubit coupled to the dilatational mode of a piezoelectric nanoelectromechanical disk resonator, many our results will apply to other qubit-oscillator models.
4 pages, Revtex
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Cited by in corpus (11)
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- Resonator/zero-Qubit architecture for superconducting qubits
- Theoretical analysis of perfect quantum state transfer with superconducting qubits
- Protecting entanglement in superconducting qubits
- Exploiting Kerr Cross Non-linearity in Circuit Quantum Electrodynamics for Non-demolition Measurements
- Entangled State Synthesis for Superconducting Resonators
- Dynamics of encrypted information in the presence of imperfect operations
- Soft-pulse dynamical decoupling in a cavity
- Efficient atomic quantum memory for photonic qubits in cavity QED