Results 21 to 30 of about 126 (112)

Axion search with quantum nondemolition detection of magnons

open access: yes, 2022
The axion provides a solution for the strong CP problem and is one of the leading candidates for dark matter. This paper proposes an axion detection scheme based on quantum nondemolition detection of magnon, i.e., quanta of collective spin excitations in
Soda, Jiro   +5 more
core   +2 more sources

Coherent nonlinear optics of quantum emitters in nanophotonic waveguides

open access: yesNanophotonics, Volume 8, Issue 10, Page 1641-1657, June 2018., 2018
Abstract Coherent quantum optics, where the phase of a photon is not scrambled as it interacts with an emitter, lies at the heart of many quantum optical effects and emerging technologies. Solid‐state emitters coupled to nanophotonic waveguides are a promising platform for quantum devices, as this element can be integrated into complex photonic chips ...
Pierre Türschmann   +7 more
wiley   +1 more source

An Experiment and Detection Scheme for Cavity‐Based Light Cold Dark Matter Particle Searches

open access: yesAdvances in High Energy Physics, Volume 2017, Issue 1, 2017., 2017
A resonance detection scheme and some useful ideas for cavity‐based searches of light cold dark matter particles (such as axions) are presented, as an effort to aid in the on‐going endeavors in this direction as well as for future experiments, especially in possibly developing a table‐top experiment.
Masroor H. S. Bukhari   +2 more
wiley   +1 more source

Quantum nondemolition photon detection in circuit QED and the quantum Zeno effect [PDF]

open access: yes, 2009
We analyze the detection of itinerant photons using a quantum nondemolition measurement. An important example is the dispersive detection of microwave photons in circuit quantum electrodynamics, which can be realized via the nonlinear interaction between
Solano, E.   +3 more
core   +1 more source

A Method for the Measurement of Photons Number and Squeezing Parameter in a Quantum Cavity

open access: yesInternational Scholarly Research Notices, Volume 2013, Issue 1, 2013., 2013
Measurement of photons number in a quantum cavity is very difficult and the photons number is changed after each measurement. Recently, many efforts have been done for the nondemolition measurement methods. Haroche et al. succeed in recognizing existence or nonexistence of one photon in a quantum cavity.
Ghasem Naeimi   +5 more
wiley   +1 more source

Universal Dynamical Control of Open Quantum Systems

open access: yesInternational Scholarly Research Notices, Volume 2013, Issue 1, 2013., 2013
Due to increasing demands on speed and security of data processing, along with requirements on measurement precision in fundamental research, quantum phenomena are expected to play an increasing role in future technologies. Special attention must hence be paid to omnipresent decoherence effects, which hamper quantumness.
Gershon Kurizki   +4 more
wiley   +1 more source

Closed‐Loop and Robust Control of Quantum Systems

open access: yesThe Scientific World Journal, Volume 2013, Issue 1, 2013., 2013
For most practical quantum control systems, it is important and difficult to attain robustness and reliability due to unavoidable uncertainties in the system dynamics or models. Three kinds of typical approaches (e.g., closed‐loop learning control, feedback control, and robust control) have been proved to be effective to solve these problems. This work
Chunlin Chen   +4 more
wiley   +1 more source

State‐Dependent Implication and Equivalence in Quantum Logic

open access: yesAdvances in Mathematical Physics, Volume 2012, Issue 1, 2012., 2012
Ideal occurrence of an event (projector) E leads to the known change of a state (density operator) ρ into EρE/[tr(Eρ)] (the Lüders state). It is shown that two events E and F give the same Lüders state if and only if the equivalence relation Eρ = Fρ is valid. This relation determines equivalence classes.
Fedor Herbut, Emilio Elizalde
wiley   +1 more source

Coherent Control of Entanglement with Atomic Ensembles [PDF]

open access: yes, 2011
Quantum networks are composed of quantum nodes which coherently interact by way of quantum channels. They offer powerful capabilities for quantum computation, communication, and metrology. A generic requirement for these realizations is the capability to
Choi, Kyung Soo
core   +1 more source

Quantum Nondemolition Measurement of a Superconducting Qubit in the Weakly Projective Regime

open access: yes, 2010
Quantum state detectors based on switching of hysteretic Josephson junctions biased close to their critical current are simple to use but have strong backaction.
Picot, T. (author)   +11 more
core   +2 more sources

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