Maintaining coherent oscillations in a solid-state qubit via continuous quantum feedback control

2004 ◽  
Author(s):  
Rusko Ruskov ◽  
Qin Zhang ◽  
Alexander N. Korotkov
Keyword(s):  
Solid State ◽  
Feedback Control ◽  
Quantum Feedback

scholarly journals Quantum feedback control of a solid-state qubit

2002 ◽  
Vol 66 (4) ◽  
Author(s):  
Rusko Ruskov ◽  
Alexander N. Korotkov
Keyword(s):  
Solid State ◽  
Feedback Control ◽  
Quantum Feedback

Feedback control of pulsed-power generator based on solid-state linear transformer driver

2021 ◽  
Vol 92 (8) ◽  
pp. 084704
Author(s):  
Junxiang Yang ◽  
Longyu Zhuang ◽  
Yu Feng ◽  
Taichi Sugai ◽  
Weihua Jiang
Keyword(s):  
Solid State ◽  
Feedback Control ◽  
Pulsed Power ◽  
Power Generator ◽  
Linear Transformer Driver ◽  
Pulsed Power Generator

Deterministic generation of symmetric multi-qubit Dicke states: an application of quantum feedback control

2015 ◽  
Vol 9 (17) ◽  
pp. 2500-2505 ◽  
Author(s):  
Jia-Hua Wei ◽  
Jian-Hua Huang ◽  
Bo Qi ◽  
Hong-Yi Dai ◽  
Ming Zhang
Keyword(s):  
Feedback Control ◽  
Quantum Feedback ◽  
Dicke States

scholarly journals Simulation of the complex dynamics of mean-field p -spin models using measurement-based quantum feedback control

2020 ◽  
Vol 102 (2) ◽  
Author(s):  
Manuel H. Muñoz-Arias ◽  
Ivan H. Deutsch ◽  
Poul S. Jessen ◽  
Pablo M. Poggi
Keyword(s):  
Feedback Control ◽  
Complex Dynamics ◽  
Mean Field ◽  
Spin Models ◽  
Quantum Feedback

scholarly journals Quantum enhanced feedback cooling of a mechanical oscillator using nonclassical light

2016 ◽  
Vol 7 (1) ◽  
Author(s):  
Clemens Schäfermeier ◽  
Hugo Kerdoncuff ◽  
Ulrich B. Hoff ◽  
Hao Fu ◽  
Alexander Huck ◽  
...  
Keyword(s):  
Feedback Control ◽  
Laser Cooling ◽  
Mechanical Oscillator ◽  
Fundamental Physics ◽  
Squeezed Light ◽  
Frequency Standards ◽  
Quantum Feedback ◽  
Consequent Reduction ◽  
Light Probe ◽  
Measurement Rate

Abstract Laser cooling is a fundamental technique used in primary atomic frequency standards, quantum computers, quantum condensed matter physics and tests of fundamental physics, among other areas. It has been known since the early 1990s that laser cooling can, in principle, be improved by using squeezed light as an electromagnetic reservoir; while quantum feedback control using a squeezed light probe is also predicted to allow improved cooling. Here we show the implementation of quantum feedback control of a micro-mechanical oscillator using squeezed probe light. This allows quantum-enhanced feedback cooling with a measurement rate greater than it is possible with classical light, and a consequent reduction in the final oscillator temperature. Our results have significance for future applications in areas ranging from quantum information networks, to quantum-enhanced force and displacement measurements and fundamental tests of macroscopic quantum mechanics.

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