Non-Abelian geometric phases are attracting increasing interest because of possible experimental application in quantum computation. We study the effects of the environment (modeled as an ensemble of harmonic oscillators) on a holonomic transformation and write the corresponding master equation. The solution is analytically and numerically investigated and the behavior of the fidelity analyzed: fidelity revivals are observed and an optimal finite operation time is determined at which the gate is most robust against noise. © 2006 The American Physical Society.
Robust gates for holonomic quantum computation / Florio, Giuseppe; Facchi, Paolo; Fazio, Rosario; Giovannetti, Vittorio; Pascazio, Saverio. - In: PHYSICAL REVIEW A. - ISSN 1050-2947. - 73:2(2006). [10.1103/PhysRevA.73.022327]
Robust gates for holonomic quantum computation
FLORIO, Giuseppe;
2006-01-01
Abstract
Non-Abelian geometric phases are attracting increasing interest because of possible experimental application in quantum computation. We study the effects of the environment (modeled as an ensemble of harmonic oscillators) on a holonomic transformation and write the corresponding master equation. The solution is analytically and numerically investigated and the behavior of the fidelity analyzed: fidelity revivals are observed and an optimal finite operation time is determined at which the gate is most robust against noise. © 2006 The American Physical Society.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
