Quantum state engineering with flux-biased Josephson phase qubits by rapid adiabatic passages

Journal Article · Wed Sep 15 00:00:00 EDT 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.82.032319· OSTI ID:21448657

Nie, W; Huang, J S; Shi, X; Wei, L F ^[1]

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1. Quantum Optelectronics Laboratory, School of Physics and Technology, Southwest Jiaotong University, Chengdu 610031 (China)

In this article, the scheme of quantum computing based on the Stark-chirped rapid adiabatic passage (SCRAP) technique [L. F. Wei, J. R. Johansson, L. X. Cen, S. Ashhab, and F. Nori, Phys. Rev. Lett. 100, 113601 (2008)] is extensively applied to implement quantum state manipulations in flux-biased Josephson phase qubits. The broken-parity symmetries of bound states in flux-biased Josephson junctions are utilized to conveniently generate the desirable Stark shifts. Then, assisted by various transition pulses, universal quantum logic gates as well as arbitrary quantum state preparations can be implemented. Compared with the usual {pi}-pulse operations widely used in experiments, the adiabatic population passages proposed here are insensitive to the details of the applied pulses and thus the desirable population transfers can be satisfyingly implemented. The experimental feasibility of the proposal is also discussed.

• OSTI ID: 21448657
• Journal Information: Physical Review. A, Vol. 82, Issue 3; Other Information: DOI: 10.1103/PhysRevA.82.032319; (c) 2010 The American Physical Society; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ENERGY-LEVEL TRANSITIONS
JOSEPHSON JUNCTIONS
LOGIC CIRCUITS
P INVARIANCE
PULSES
QUANTUM COMPUTERS
QUANTUM MECHANICS
QUANTUM STATES
QUBITS
STARK EFFECT
COMPUTERS
ELECTRONIC CIRCUITS
INFORMATION
INVARIANCE PRINCIPLES
MECHANICS
QUANTUM INFORMATION
SUPERCONDUCTING JUNCTIONS