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12 papers · 2 filters
Electric circuit networks equivalent to chaotic quantum billiards
Evgeny N. Bulgakov, Dmitrii N. Maksimov, Almas F. Sadreev
We formulate two types of electric RLC resonance network equivalent to quantum billiards. In the network of inductors grounded by capacitors squared resonant frequencies are eigenv…
On a Stroboscopic Approach to Quantum Tomography of Qudits Governed by Gaussian Semigroups
Andrzej Jamiołkowski
In this paper, we discuss the minimal number of observables, where expectation values at some time instant determine the trajectory of a d-level quantum system ("qudit") governed b…
On v^2/c^2 expansion of the Dirac equation with external potentials
Wlodek Zawadzki
The v^2/c^2 expansion of the Dirac equation with external potentials is reexamined. A complete, gauge invariant form of the expansion to order (1/c)^2 is established which contains…
The Bloch-vector space for N-level systems -- the spherical-coordinate point of view
Gen Kimura, Andrzej Kossakowski
Bloch-vector spaces for -level systems are investigated from the spherical-coordinate point of view in order to understand their geometrical aspects. We show that the maximum ra…
Giant Lamb Shift in Photonic Crystals
Xue-Hua Wang, Yuri S Kivshar, Ben-Yuan Gu
We obtain a general result for the Lamb shift of excited states of multi-level atoms in inhomogeneous electromagnetic structures and apply it to study atomic hydrogen in inverse-op…
Entanglement of eta-pairing state with off-diagonal long-range order
Heng Fan, Seth Lloyd
Off-diagonal long-range order (ODLRO) is a quantum phenomenon not describable in classical mechanical terms. It is believed to be one characteristic of superconductivity. The quant…