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Home › 40. QUANTUM INFORMATION TECHNOLOGIES

41. METROLOGY

Sensing in the presence of an observed environment

Fri, 2016-06-03 13:20 - Oliver Marty
Date: 
2015-10-09 - 2016-03-17
Author(s): 

Martin B. Plenio and Susana F. Huelga

Reference: 

Phys. Rev. A 93, 032123

URL: 

http://journals.aps.org/pra/abstract/10.1103/PhysRevA.93.032123

Sensing in the presence of environmental noise is a problem of increasing practical interest. In a master equation description, where the state of the environment is unobserved, the effect of the signal and noise is described by system operators only. In this context it is well known that noise that is orthogonal in an external signal can be corrected for without perturbing the signal, while similarly efficient strategies for nonorthogonal signal and noise operators are not known.

  • 41. METROLOGY
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Precise qubit control beyond the rotating wave approximation

Fri, 2016-03-04 09:26 - Werner Weiss
Date: 
2014-09-19
Author(s): 

J. Scheuer, Xi Kong, R. S. Said, J. Chen, A. Kurz, L. Marseglia, J. Du, P. R. Hemmer, S. Montangero, T. Calarco, B. Naydenov, F. Jelezko

Reference: 

New J. Phys. 16, 093022 (2014)
http://dx.doi.org/10.1088/1367-2630/16/9/093022

URL: 

http://iopscience.iop.org/article/10.1088/1367-2630/16/9/093022

  • 41. METROLOGY
  • H2020
  • QIPC
  • 01.30.+r Quantum states and dynamics as a resource for information processing
  • Result
  • SIQS
  • 16.10.Ns Nuclear spins
  • 05.70.+o Quantum information & quantum control
  • STREPs
  • 16.20.Dc Defect centers in diamonds
  • Other
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Signal transduction and conversion with color centers in diamond and piezo-elements

Fri, 2014-05-16 15:56 - Oliver Marty
Date: 
2014-04-25
Author(s): 

J. Cai, F. Jelezko, M. B. Plenio

Reference: 

arXiv:1404.6393

URL: 

http://arxiv.org/abs/1404.6393

The ability to measure weak signals such as pressure, force, electric field, and temperature with nanoscale devices and high spatial resolution offers a wide range of applications in fundamental and applied sciences. Here we present a proposal for a hybrid device composed of thin film layers of diamond with color centers implanted and piezo-active elements for the transduction and measurement of a wide variety of physical signals.

  • 41. METROLOGY
  • 41.10.+p Quantum enhanced measurements
  • 41.90.+n New sensor technologies
  • QIPC
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All-optical high-resolution magnetic resonance using a nitrogen-vacancy spin in diamond

Fri, 2014-05-16 15:48 - Oliver Marty
Date: 
2014-04-04
Author(s): 

Z.-Y. Wang, J.-M. Cai, A. Retzker, M. B. Plenio

Reference: 

arXiv:1404.1190

URL: 

http://arxiv.org/abs/1404.1190

We propose an all-optical scheme to prolong the quantum coherence of a negatively charged nitrogen-vacancy (NV) center in diamond. Optical control of the NV spin suppresses energy fluctuations of the 3A2 ground states and forms an energy gap protected subspace. By optical control, the spectral linewidth of magnetic resonance is much narrower and the measurement of the frequencies of magnetic field sources has higher resolution.

  • 41. METROLOGY
  • 41.50.+n Nanomechanical sensors
  • 41.90.+n New sensor technologies
  • 41.95.+m Quantum magnetometry
  • SIQS
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Optical detection of radio waves through a nanomechanical transducer

Fri, 2014-03-21 13:37 - Kasper Jensen
Date: 
2014-03-05
Author(s): 

T. Bagci, A. Simonsen, S. Schmid, L. G. Villanueva, E. Zeuthen, J. Appel, J. M. Taylor, A. Sørensen, K. Usami, A. Schliesser, and E. S. Polzik

Reference: 

Nature 507, 81–85 (06 March 2014) doi:10.1038/nature13029,
arXiv:1307.3467 (2013)

URL: 

http://www.nature.com/nature/journal/v507/n7490/full/nature13029.html

  • 41. METROLOGY
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Demonstration of suppressed phonon tunneling losses in phononic bandgap shielded membrane resonators for high-Q optomechanics

Mon, 2014-01-06 14:48 - Kasper Jensen
Date: 
2014-03-17
Author(s): 

Yeghishe Tsaturyan, Andreas Barg, Anders Simonsen, Luis Guillermo Villanueva, Silvan Schmid, Albert Schliesser, Eugene S. Polzik

Reference: 

Optics Express, Vol. 22, Issue 6, pp. 6810-6821 (2014),
arXiv:1312.7776 (2013)

URL: 

http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-22-6-6810

  • 41. METROLOGY
  • 41.50.+n Nanomechanical sensors
  • FP7
  • Result
  • SIQS

Ramsey's Method of Separated Oscillating Fields and its Application to Gravitationally

Mon, 2010-10-18 11:51 - Donatella Rosetti
Date: 
2010-07-30
Reference: 

H. Abele, T. Jenke, H. Leeb, J. Schmiedmayer
Phys. Rev. D, 81, 065019 (2010)

 

  • 41. METROLOGY
  • 41.10.+p Quantum enhanced measurements
  • AQUTE
  • Quantum Metrology, Sensing and Imaging
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Atom chip based generation of entanglement for quantum metrology

Fri, 2010-03-19 11:29 - Daniele Binosi
Date: 
2010-03-08
Reference: 

Max F. Riedel, Pascal Böhi, Yun Li, Theodor W. Hänsch, Alice Sinatra, Philipp Treutlein
Nature 464, 1170-1173 (22 April 2010) | doi:10.1038/nature08988
arXiv:1003.1651 [quant-ph] (http://arxiv.org/abs/1003.1651)

Atom chips provide a versatile `quantum laboratory on a microchip' for experiments with ultracold atomic gases. They have been used in experiments on diverse topics such as low-dimensional quantum gases, cavity quantum electrodynamics, atom-surface interactions, and chip-based atomic clocks and interferometers. A severe limitation of atom chips, however, is that techniques to control atomic interactions and to generate entanglement have not been experimentally available so far.

  • 41. METROLOGY
  • AQUTE
  • QIPC
  • Quantum Metrology, Sensing and Imaging
  • 15.20.Oc Optical atom chips
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