Generation of optical macroscopic quantum superposition states via state reduction with a Mach-Zehnder interferometer containing a Kerr medium

1999 ◽  
Vol 59 (5) ◽  
pp. 4095-4098 ◽  
Author(s):  
Christopher C. Gerry
Keyword(s):  
Zehnder Interferometer ◽  
Kerr Medium ◽  
Quantum Superposition ◽  
State Reduction ◽  
Macroscopic Quantum ◽  
Superposition States ◽  
Mach Zehnder Interferometer

Finite Kerr medium: Macroscopic quantum superposition states and Wigner functions on the sphere

1999 ◽  
Vol 60 (3) ◽  
pp. 1817-1823 ◽  
Author(s):  
Sergey M. Chumakov ◽  
Alejandro Frank ◽  
Kurt Bernardo Wolf
Keyword(s):  
Kerr Medium ◽  
Wigner Functions ◽  
Quantum Superposition ◽  
Macroscopic Quantum ◽  
Superposition States

Production of Schrödinger macroscopic quantum-superposition states in a Kerr medium

1993 ◽  
Vol 47 (6) ◽  
pp. 5024-5029 ◽  
Author(s):  
K. Tara ◽  
G. S. Agarwal ◽  
S. Chaturvedi
Keyword(s):  
Kerr Medium ◽  
Quantum Superposition ◽  
Macroscopic Quantum ◽  
Superposition States

scholarly journals Creation of macroscopic quantum superposition states by a measurement

2008 ◽  
Vol 83 (6) ◽  
pp. 60004 ◽  
Author(s):  
I. E. Mazets ◽  
G. Kurizki ◽  
M. K. Oberthaler ◽  
J. Schmiedmayer
Keyword(s):  
Quantum Superposition ◽  
Macroscopic Quantum ◽  
Superposition States

scholarly journals A Proposal for Evading the Measurement Uncertainty in Classical and Quantum Computing: Application to a Resonant Tunneling Diode and a Mach-Zehnder Interferometer

2019 ◽  
Vol 9 (11) ◽  
pp. 2300 ◽  
Author(s):  
Devashish Pandey ◽  
Laura Bellentani ◽  
Matteo Villani ◽  
Guillermo Albareda ◽  
Paolo Bordone ◽  
...  
Keyword(s):  
Resonant Tunneling ◽  
Electrical Current ◽  
Resonant Tunneling Diode ◽  
Zehnder Interferometer ◽  
Practical Implementation ◽  
State Reduction ◽  
Mean Values ◽  
Quantum Uncertainty ◽  
Tunneling Diode ◽  
Mach Zehnder Interferometer

Measuring properties of quantum systems is governed by a stochastic (collapse or state-reduction) law that unavoidably yields an uncertainty (variance) associated with the corresponding mean values. This non-classical source of uncertainty is known to be manifested as noise in the electrical current of nanoscale electron devices, and hence it can flaw the good performance of more complex quantum gates. We propose a protocol to alleviate this quantum uncertainty that consists of (i) redesigning the device to accommodate a large number of electrons inside the active region, either by enlarging the lateral or longitudinal areas of the device and (ii) re-normalizing the total current to the number of electrons. How the above two steps can be accommodated using the present semiconductor technology has been discussed and numerically studied for a resonant tunneling diode and a Mach-Zehnder interferometer, for classical and quantum computations, respectively. It is shown that the resulting protocol formally resembles the so-called collective measurements, although, its practical implementation is substantially different.

scholarly journals Dissipative Optomechanical Preparation of Macroscopic Quantum Superposition States

2016 ◽  
Vol 116 (23) ◽  
Author(s):  
M. Abdi ◽  
P. Degenfeld-Schonburg ◽  
M. Sameti ◽  
C. Navarrete-Benlloch ◽  
M. J. Hartmann
Keyword(s):  
Quantum Superposition ◽  
Macroscopic Quantum ◽  
Superposition States

scholarly journals Quantum non-demolition measurement in the interferometer

2020 ◽  
Vol 9 (1) ◽  
pp. 7
Author(s):  
Dmitri Khokhlov
Keyword(s):  
Single Photon ◽  
Zehnder Interferometer ◽  
Kerr Medium ◽  
Beam Splitters ◽  
Polarizing Beam Splitters ◽  
Mach Zehnder Interferometer

The schemes of the arrangements based on the Mach-Zehnder interferometer and the interferometer with two polarizing beam splitters are considered. The interferometers in both the schemes are equipped with some devices, creating a Kerr medium, to perform the quantum non-demolition measurement of a single photon. Such a device gives which way information of the photon while preserving the work of the interferometer.

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