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Coherent Processing of a Qubit Using One Squeezed State

Independent Researcher, 35 Bowring Walk, Toronto, ON M3H-5Z8, Canada
Entropy 2017, 19(12), 653; https://doi.org/10.3390/e19120653
Received: 5 October 2017 / Revised: 19 November 2017 / Accepted: 22 November 2017 / Published: 30 November 2017
(This article belongs to the Special Issue Quantum Mechanics: From Foundations to Information Technologies)
In a departure from most work in quantum information utilizing Gaussian states, we use a single such state to represent a qubit and model environmental noise with a class of quadratic dissipative equations. A benefit of this single Gaussian representation is that with one deconvolution, we can eliminate noise. In this deconvolution picture, a basis of squeezed states evolves to another basis of such states. One of the limitations of our approach is that noise is eliminated only at a privileged time. We suggest that this limitation may actually be used advantageously to send information securely: the privileged time is only known to the sender and the receiver, and any intruder accessing the information at any other time encounters noisy data. View Full-Text
Keywords: coherence; qubit; quantum noise; squeezed state coherence; qubit; quantum noise; squeezed state
MDPI and ACS Style

Tameshtit, A. Coherent Processing of a Qubit Using One Squeezed State. Entropy 2017, 19, 653.

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