Against Quantum Noise
نویسندگان
چکیده
منابع مشابه
Against Quantum Noise
This is a brief description of how to protect quantum states from dissipation and decoherence that arise due to uncontrolled interactions with the environment. We discuss recoherence and stabilisation of quantum states based on two techniques known as “symmetrisation” and “quantum error correction”. We illustrate our considerations with the most popular quantum-optical model of the system-envir...
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FIG. 1. Quantum metrology strategies. The maps Λφ encode the parameter φ to be estimated. (i) sequential scheme: Λφ acts n times sequentially on N/n input probes ρ (this is an entanglement-free classical scheme) ; (ii) entangled parallel scheme: an entangled state of N probes ρN goes through N maps Λφ in parallel; (iii) passive ancilla scheme: the N probes are also entangled with M noiseless an...
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ژورنال
عنوان ژورنال: Acta Physica Polonica A
سال: 1998
ISSN: 0587-4246,1898-794X
DOI: 10.12693/aphyspola.93.63