In this paper we analyze the resilience to decoherence of the Macroscopic Quantum Superpositions (MQS) generated by optimal phase-covariant quantum cloning according to two coherence criteria, both based on the concept of Bures distance in Hilbert spaces. We show that all MQS generated by this system are characterized by a high resilience to decoherence processes. This analysis is supported by the results of recent MQS experiments of N=3.5x10(4) particles.
Generation of Highly Resilient to Decoherence Macroscopic Quantum Superpositions via Phase-covariant Quantum Cloning / DE MARTINI, Francesco; Sciarrino, Fabio; Spagnolo, Nicolo'; Vitelli, Chiara. - In: FOUNDATIONS OF PHYSICS. - ISSN 0015-9018. - 41:3(2011), pp. 492-508. [10.1007/s10701-010-9445-z]
Generation of Highly Resilient to Decoherence Macroscopic Quantum Superpositions via Phase-covariant Quantum Cloning
DE MARTINI, Francesco;SCIARRINO, Fabio;SPAGNOLO, NICOLO';VITELLI, Chiara
2011
Abstract
In this paper we analyze the resilience to decoherence of the Macroscopic Quantum Superpositions (MQS) generated by optimal phase-covariant quantum cloning according to two coherence criteria, both based on the concept of Bures distance in Hilbert spaces. We show that all MQS generated by this system are characterized by a high resilience to decoherence processes. This analysis is supported by the results of recent MQS experiments of N=3.5x10(4) particles.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
