Quantum memory, entanglement and sensing with room temperature atoms

Kasper Jensen...[et al.]; Wojciech Wasilewski; Thomas Fernholz; Eugene Simon Polzik; Bo Melholt Nielsen; Hanna Krauter; Jelmer Jan Renema; Michael Marc Wolf; Jörg Helge Müller; Jonas Meyer Petersen

doi:10.1088/1742-6596/264/1/012022

Quantum memory, entanglement and sensing with room temperature atoms

Kasper Jensen...[et al.], Wojciech Wasilewski, Thomas Fernholz, Eugene Simon Polzik, Bo Melholt Nielsen, Hanna Krauter, Jelmer Jan Renema, Michael Marc Wolf, Jörg Helge Müller, Jonas Meyer Petersen

Abstract

Room temperature atomic ensembles in a spin-protected environment are useful systems both for quantum information science and metrology. Here we utilize a setup consisting of two atomic ensembles as a memory for quantum information initially encoded in the polarization state of two entangled light modes. We also use the ensembles as a radio frequency entanglement-assisted magnetometer with projection noise limited sensitivity below femtoTesla/. The performance of the quantum memory as well as the magnetometer was improved by spin-squeezed or entangled atomic states generated by quantum non demolition measurements. Finally, we present preliminary results of long lived entangled atomic states generated by dissipation. With the method presented, one should be able to generate an entangled steady state.

Original language	English
Book series	Journal of Physics: Conference Series (Online)
Volume	264
Issue number	1
Pages (from-to)	012022
ISSN	1742-6596
DOIs	https://doi.org/10.1088/1742-6596/264/1/012022
Publication status	Published - 1 Dec 2011

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title = "Quantum memory, entanglement and sensing with room temperature atoms",

abstract = "Room temperature atomic ensembles in a spin-protected environment are useful systems both for quantum information science and metrology. Here we utilize a setup consisting of two atomic ensembles as a memory for quantum information initially encoded in the polarization state of two entangled light modes. We also use the ensembles as a radio frequency entanglement-assisted magnetometer with projection noise limited sensitivity below femtoTesla/. The performance of the quantum memory as well as the magnetometer was improved by spin-squeezed or entangled atomic states generated by quantum non demolition measurements. Finally, we present preliminary results of long lived entangled atomic states generated by dissipation. With the method presented, one should be able to generate an entangled steady state.",

author = "{Jensen...[et al.]}, Kasper and Wojciech Wasilewski and Thomas Fernholz and Polzik, {Eugene Simon} and Nielsen, {Bo Melholt} and Hanna Krauter and Renema, {Jelmer Jan} and Wolf, {Michael Marc} and M{\"u}ller, {J{\"o}rg Helge} and Petersen, {Jonas Meyer}",

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doi = "10.1088/1742-6596/264/1/012022",

language = "English",

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T1 - Quantum memory, entanglement and sensing with room temperature atoms

AU - Jensen...[et al.], Kasper

AU - Wasilewski, Wojciech

AU - Fernholz, Thomas

AU - Polzik, Eugene Simon

AU - Nielsen, Bo Melholt

AU - Krauter, Hanna

AU - Renema, Jelmer Jan

AU - Wolf, Michael Marc

AU - Müller, Jörg Helge

AU - Petersen, Jonas Meyer

PY - 2011/12/1

Y1 - 2011/12/1

N2 - Room temperature atomic ensembles in a spin-protected environment are useful systems both for quantum information science and metrology. Here we utilize a setup consisting of two atomic ensembles as a memory for quantum information initially encoded in the polarization state of two entangled light modes. We also use the ensembles as a radio frequency entanglement-assisted magnetometer with projection noise limited sensitivity below femtoTesla/. The performance of the quantum memory as well as the magnetometer was improved by spin-squeezed or entangled atomic states generated by quantum non demolition measurements. Finally, we present preliminary results of long lived entangled atomic states generated by dissipation. With the method presented, one should be able to generate an entangled steady state.

AB - Room temperature atomic ensembles in a spin-protected environment are useful systems both for quantum information science and metrology. Here we utilize a setup consisting of two atomic ensembles as a memory for quantum information initially encoded in the polarization state of two entangled light modes. We also use the ensembles as a radio frequency entanglement-assisted magnetometer with projection noise limited sensitivity below femtoTesla/. The performance of the quantum memory as well as the magnetometer was improved by spin-squeezed or entangled atomic states generated by quantum non demolition measurements. Finally, we present preliminary results of long lived entangled atomic states generated by dissipation. With the method presented, one should be able to generate an entangled steady state.

U2 - 10.1088/1742-6596/264/1/012022

DO - 10.1088/1742-6596/264/1/012022

M3 - Conference article

SN - 1742-6588

VL - 264

SP - 012022

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

IS - 1

ER -

Quantum memory, entanglement and sensing with room temperature atoms

Abstract

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