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Results tagged with quantum-mechanics
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user 200076
Quantum mechanics describes the microscopic properties of nature in a regime where classical mechanics no longer applies. It explains phenomena such as the wave-particle duality, quantization of energy, and the uncertainty principle and is generally used in single-body systems. Use the quantum-field-theory tag for the theory of many-body quantum-mechanical systems.
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Master equation approximation
In the Lindbladian master equation, one of the approximations is assuming $\rho(t)=\rho_S(t)\otimes\rho_B(t)$.
However, if we try to solve the total state in a numerical way, using $\dot{\rho}(t)=-i[H …
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How can Bell's inequalities be used to rule out hidden variable theories when they do not ta...
EPR paradox shows that quantum physics is not complete. And Bell's inequality demonstrates by assuming that there is a hidden variable due to incompleteness, and it shows that does not match with the …
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Squeezed state expectation value form
What is the form of $$S^+px^2S$$?
(where $S$ is the squeeze operator.)
I know the form of $S^+pS$ and $S^+x^2S$ but no matter how I calculate it I cant find the form for $S^+px^2S$.
The main problem …
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How does EPR pair shows simultaneously two defined values?
In the paper "Can Quantum-Mechanical Description of Physical Reality Be Considered Complete ?", it implies that with an entangled state it is possible to know two physical quantities simultaneously. F …
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CNOT gate path interference
I have a question on paper "https://doi.org/10.1038/nature02054".
In this paper, the CNOT gate is realized using a beam displacer for higher stability. The figure below shows a 1:1 mapping from (a) to …
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