Environmental noise reduction for holonomic quantum gates

Journal Article · Sun Jul 15 00:00:00 EDT 2007 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.76.012337· OSTI ID:21011204

Parodi, Daniele; Zanghi, Nino ^[1]; Sassetti, Maura ^[1]; Solinas, Paolo ^[2]

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1. Dipartimento di Fisica, Universita di Genova, Genova (Italy)
2. Laboratoire de Physique Theorique de la Matiere Condensee, Universite Pierre et Marie Curie, Place Jussieu, 75252 Paris Cedex 05 (France)

We study the performance of holonomic quantum gates, driven by lasers, under the effect of a dissipative environment modeled as a thermal bath of oscillators. We show how to enhance the performance of the gates by a suitable choice of the loop in the manifold of the controllable parameters of the laser. For a simplified, albeit realistic model, we find the surprising result that for a long time evolution the performance of the gate (properly estimated in terms of average fidelity) increases. On the basis of this result, we compare holonomic gates with the so-called stimulated raman adiabatic passage (STIRAP) gates.

• OSTI ID: 21011204
• Journal Information: Physical Review. A, Vol. 76, Issue 1; Other Information: DOI: 10.1103/PhysRevA.76.012337; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ADIABATIC PROCESSES
COMPARATIVE EVALUATIONS
EVOLUTION
LASER RADIATION
NOISE
OPTICS
OSCILLATORS
PERFORMANCE
QUANTUM MECHANICS