Results 31 to 40 of about 668,121 (290)
Action principle for continuous quantum measurement [PDF]
, 2013 We present a stochastic path integral formalism for continuous quantum measurement that enables the analysis of rare events using action methods. By doubling the quantum state space to a canonical phase space, we can write the joint probability density ...
Chantasri, A. +2 more
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Physical Review Letters, 2019 Invasiveness of quantum measurements is a genuinely quantum mechanical feature that is not necessarily detrimental: Here we show how quantum measurements can be used to fuel a cooling engine. We illustrate quantum measurement cooling (QMC) by means of a prototypical two-stroke two-qubit engine which interacts with a measurement apparatus and two heat ...
Buffoni Lorenzo +4 more
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Feedback control of quantum state reduction [PDF]
, 2004 Feedback control of quantum mechanical systems must take into account the probabilistic nature of quantum measurement. We formulate quantum feedback control as a problem of stochastic nonlinear control by considering separately a quantum filtering ...
Mabuchi, Hideo +2 more
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Enhanced Readout from Spatial Interference Fringes in a Point-Source Cold Atom Inertial Sensor
Sensors, 2023 When the initial size of an atom cloud in a cold atom interferometer is negligible compared to its size after free expansion, the interferometer is approximated to a point-source interferometer and is sensitive to rotational movements by introducing an ...
Jing Wang +5 more
doaj +1 more source
QUANTUM MECHANICS AS QUANTUM MEASURE THEORY [PDF]
Modern Physics Letters A, 1994 The additivity of classical probabilities is only the first in a hierarchy of possible sum rules, each of which implies its successor. The first and most restrictive sum rule of the hierarchy yields measure theory in the Kolmogorov sense, which is appropriate physically for the description of stochastic processes such as Brownian motion.
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Quantum Covers in Quantum Measure Theory [PDF]
Foundations of Physics, 2010 In standard measure theory the measure on the base set Omega is normalised to one, which encodes the statement that "Omega happens". Moreover, the rules imply that the measure of any subset A of Omega is strictly positive if and only if A cannot be covered by a collection of subsets of zero measure.
Surya, Sumati, Wallden, Petros
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Quasi-one-dimensional topological material Bi4X4(X=Br,I)
Advances in Physics: X, 2022 Bismuth halogenides, a family of quasi-one-dimensional (1D) materials, including α and α phases of Bi4Br4 and Bi4I4, have been predicted to exhibit rich and interesting topological properties.
Junfeng Han, Wende Xiao, Yugui Yao
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Two-Dimensional Cr5Te8@Graphite Heterostructure for Efficient Electromagnetic Microwave Absorption
Nano-Micro Letters, 2023 Highlights A Cr5Te8@expanded graphite heterostructure is fabricated by chemical vapor deposition, exhibiting remarkable microwave absorption performance with a minimum reflection loss of up to − 57.6 dB at a thin thickness of only 1.4 mm under a low ...
Liyuan Qin +8 more
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Super Quantum Discord with Weak Measurements
, 2013 Weak measurements cause small change to quantum states, thereby opening up the possibility of new ways of manipulating and controlling quantum systems. We ask, can weak measurements reveal more quantum correlation in a composite quantum state?
Pati, Arun Kumar, Singh, Uttam
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Measurement-Only Topological Quantum Computation via Anyonic Interferometry
, 2008 We describe measurement-only topological quantum computation using both projective and interferometrical measurement of topological charge. We demonstrate how anyonic teleportation can be achieved using "forced measurement" protocols for both types of ...
Aliferis +53 more
core +2 more sources