Stabilizing spin coherence through environmental entanglement in strongly dissipative quantum systems
Publication
, Journal Article
Bera, S; Florens, S; Baranger, HU; Roch, N; Nazir, A; Chin, AW
Published in: Physical Review B - Condensed Matter and Materials Physics
March 18, 2014
The key feature of a quantum spin coupled to a harmonic bath - a model dissipative quantum system - is competition between oscillator potential energy and spin tunneling rate. We show that these opposing tendencies cause environmental entanglement through superpositions of adiabatic and antiadiabatic oscillator states, which then stabilizes the spin coherence against strong dissipation. This insight motivates a fast-converging variational coherent-state expansion for the many-body ground state of the spin-boson model, which we substantiate via numerical quantum tomography. © 2014 American Physical Society.
Duke Scholars
Altmetric Attention Stats
Dimensions Citation Stats
Published In
Physical Review B - Condensed Matter and Materials Physics
DOI
EISSN
1550-235X
ISSN
1098-0121
Publication Date
March 18, 2014
Volume
89
Issue
12
Related Subject Headings
- Fluids & Plasmas
- 09 Engineering
- 03 Chemical Sciences
- 02 Physical Sciences
Citation
APA
Chicago
ICMJE
MLA
NLM
Bera, S., Florens, S., Baranger, H. U., Roch, N., Nazir, A., & Chin, A. W. (2014). Stabilizing spin coherence through environmental entanglement in strongly dissipative quantum systems. Physical Review B - Condensed Matter and Materials Physics, 89(12). https://doi.org/10.1103/PhysRevB.89.121108
Bera, S., S. Florens, H. U. Baranger, N. Roch, A. Nazir, and A. W. Chin. “Stabilizing spin coherence through environmental entanglement in strongly dissipative quantum systems.” Physical Review B - Condensed Matter and Materials Physics 89, no. 12 (March 18, 2014). https://doi.org/10.1103/PhysRevB.89.121108.
Bera S, Florens S, Baranger HU, Roch N, Nazir A, Chin AW. Stabilizing spin coherence through environmental entanglement in strongly dissipative quantum systems. Physical Review B - Condensed Matter and Materials Physics. 2014 Mar 18;89(12).
Bera, S., et al. “Stabilizing spin coherence through environmental entanglement in strongly dissipative quantum systems.” Physical Review B - Condensed Matter and Materials Physics, vol. 89, no. 12, Mar. 2014. Scopus, doi:10.1103/PhysRevB.89.121108.
Bera S, Florens S, Baranger HU, Roch N, Nazir A, Chin AW. Stabilizing spin coherence through environmental entanglement in strongly dissipative quantum systems. Physical Review B - Condensed Matter and Materials Physics. 2014 Mar 18;89(12).
Published In
Physical Review B - Condensed Matter and Materials Physics
DOI
EISSN
1550-235X
ISSN
1098-0121
Publication Date
March 18, 2014
Volume
89
Issue
12
Related Subject Headings
- Fluids & Plasmas
- 09 Engineering
- 03 Chemical Sciences
- 02 Physical Sciences