Results 21 to 30 of about 1,749,039 (283)
Experimental noiseless linear amplification using weak measurements
New Journal of Physics, 2016 The viability of quantum communication schemes rely on sending quantum states of light over long distances. However, transmission loss can degrade the signal strength, adding noise.
Joseph Ho +3 more
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Geometric phase in weak measurements [PDF]
, 2006 Pancharatnam's geometric phase is associated with the phase of a complex-valued weak value arising in a certain type of weak measurement in pre- and post-selected quantum ensembles.
Aharonov +15 more
core +1 more source
IEEE Photonics Journal, 2018 Photonic spin Hall effect (SHE) can be an effective sensor for determining the refractive index (RI) variation of a sensing medium. How to further improve its sensitivity is a very interesting and important issue.
Lijuan Sheng +5 more
doaj +1 more source
Ultrasensitive Protein Concentration Characterization Based on Weak Measurements
Photonic Sensors, 2022 An optical rotation bio-sensor based on the photonic spin Hall effect was established and applied to detecting the concentration varieties of chiral molecules.
Bowen Song +3 more
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Deep Reinforcement Learning for Quantum State Preparation with Weak Nonlinear Measurements [PDF]
Quantum, 2022 Quantum control has been of increasing interest in recent years, e.g. for tasks like state initialization and stabilization. Feedback-based strategies are particularly powerful, but also hard to find, due to the exponentially increased search space. Deep
Riccardo Porotti +3 more
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Demystifying Weak Measurements [PDF]
Foundations of Physics, 2017 A large literature has grown up around the proposed use of 'weak measurements' (i.e., unsharp measurements followed by post-selection) to allegedly provide information about hidden ontological features of quantum systems. This paper attempts to clarify the fact that 'weak measurements' involve strong (projective) measurements on one (pointer) member of
openaire +2 more sources
Quantum weak-interaction-based measurement: from sequential weak measurement to protective measurement [PDF]
Quantum Communications and Quantum Imaging XVI, 2018 Weak value measurements have been a real breakthrough in the quantum measurement framework. In particular, quantum measurements may take advantage by anomalous weak values, i.e. values out of the eigenvalues spectrum of the measured observable, both for implementing new measurement techniques and studying Quantum Mechanics foundations.
Degiovanni, Ivo Pietro +13 more
openaire +3 more sources
Weak-value amplification for Weyl-point separation in momentum space
New Journal of Physics, 2018 The existence of Weyl nodes in the momentum space is a hallmark of a Weyl semimetal (WSM). A WSM can be confirmed by observing its Fermi arcs with separated Weyl nodes.
Shizhen Chen +6 more
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Quantum current in dissipative systems
New Journal of Physics, 2019 Describing current in open quantum systems can be problematic due to the subtle interplay of quantum coherence and environmental noise. Probing the noise-induced current can be detrimental to the tunneling-induced current and vice versa.
Karen V Hovhannisyan, Alberto Imparato
doaj +1 more source
The Weak Reality That Makes Quantum Phenomena More Natural: Novel Insights and Experiments
Entropy, 2018 While quantum reality can be probed through measurements, the Two-State Vector Formalism (TSVF) reveals a subtler reality prevailing between measurements. Under special pre- and post-selections, odd physical values emerge.
Yakir Aharonov +3 more
doaj +1 more source