Journal
PHYSICAL REVIEW A
Volume 86, Issue 1, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.86.012116
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Funding
- DFG [SFB 631]
- Cluster of Excellence NIM
- NSF
- CUA
- Packard Foundation
- ECR
- AFOSR under MURI Award [FA9550-09-1-0588]
- Direct For Mathematical & Physical Scien
- Division Of Physics [969816, 1125846] Funding Source: National Science Foundation
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We investigate dissipative phase transitions in an open central spin system. In our model the central spin interacts coherently with the surrounding many-particle spin environment and is subject to coherent driving and dissipation. We develop analytical tools based on a self-consistent Holstein-Primakoff approximation that enable us to determine the complete phase diagram associated with the steady states of this system. It includes first- and second-order phase transitions, as well as regions of bistability, spin squeezing, and altered spin-pumping dynamics. Prospects of observing these phenomena in systems such as electron spins in quantum dots or nitrogen-vacancy centers coupled to lattice nuclear spins are briefly discussed.
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