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Squeezing of a nanomechanical resonator by quantum nondemolition measurement and feedback
Rusko Ruskov, Keith Schwab, Alexander N. Korotkov
We analyze squeezing of the nanoresonator state produced by periodic measurement of position by a quantum point contact or a single-electron transistor. The mechanism of squeezing…
Quantum Nondemolition Squeezing of a Nanomechanical Resonator
Rusko Ruskov, Keith Schwab, Alexander N. Korotkov
We show that the nanoresonator position can be squeezed significantly below the ground state level by measuring the nanoresonator with a quantum point contact or a single-electron…
Simple quantum feedback of a solid-state qubit
Alexander N. Korotkov
We propose an experiment on quantum feedback control of a solid-state qubit, which is almost within the reach of the present-day technology. Similar to the earlier proposal, the fe…
Comment on "Continuous quantum measurement: inelastic tunneling and lack of current oscillations"
Dmitri V. Averin, Alexander N. Korotkov
This is a comment on recent paper by T.M. Stace and S.D. Barrett, PRL 92, 136802 (2004). We show that the main result of the paper, absence of the spectral peak for continuous weak…
Quadratic Quantum Measurements
Wenjin Mao, Dmitri V. Averin, Rusko Ruskov +1
We develop a theory of quadratic quantum measurements by a mesoscopic detector. It is shown that quadratic measurements should have non-trivial quantum information properties, prov…