Adiabatic coherent control in the anharmonic ion trap: Proposal for the vibrational two-qubit system

Journal Article · Sun May 15 04:00:00 EDT 2011 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.83.052319· OSTI ID:21546736

Lei, Wang; Babikov, Dmitri ^[1]

---

1. Chemistry Department, Marquette University, P.O. Box 1881, Milwaukee, Wisconsin 53201 (United States)

A method for encoding a multiqubit system into the quantized motional states of ion string in an anharmonic linear trap is proposed. Control over this system is achieved by applying oscillatory electric fields (rf) shaped optimally for desired state-to-state transitions. Anharmonicity of the vibrational spectrum of the system plays a key role in this approach to the control and quantum computation, since it allows resolving different state-to-state transitions and addressing them selectively. The anharmonic trap architecture proposed earlier [Phys. Rev. A 83, 022305 (2011)] is explored here and the optimal control theory is used to derive pulses for a set of universal quantum gates. An accurate choice of pulse parameters allows deriving gates that are both accurate and simple. A practical realization of this approach seems to be within the reach of today's technology.

• OSTI ID: 21546736
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 5 Vol. 83; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ADIABATIC PROCESSES
ANHARMONIC OSCILLATORS
CHARGED PARTICLES
COMPUTERS
CONTROL
ELECTRIC FIELDS
ENERGY LEVELS
EXCITED STATES
INFORMATION
IONS
OPTIMAL CONTROL
PULSES
QUANTUM COMPUTERS
QUANTUM INFORMATION
QUBITS
SPECTRA
TRAPPING
VIBRATIONAL STATES