Spin Squeezing as a Probe of Emergent Quantum Orders
Conference
·
· Proceedings of the 29th International Conference on Low Temperature Physics (LT29)
- Brown University, Providence, RI (United States); University of Tennessee, Knoxville
- Brown University, Providence, RI (United States)
- University of Tennessee, Knoxville, TN (United States)
- Dartmouth College, Hanover, NH (United States)
Nuclear magnetic resonance (NMR) experiments can reveal local properties in materials, but are often limited by the low signal-to-noise ratio. Spin squeezed states have an improved resolution below the Heisenberg limit in one of the spin components, and have been extensively used to improve the sensitivity of atomic clocks, for example [1]. Interacting and entangled spin ensembles with non-linear coupling are a natural candidate for implementing squeezing. Furthermore, we propose measurement of the spin-squeezing parameter that itself can act as a local probe of emergent orders in quantum materials. In particular, we demonstrate how to investigate an anisotropic electric field gradient via its coupling to the nuclear quadrupole moment. While squeezed spin states are pure, the squeezing parameter can be estimated for both pure and mixed states. We evaluate the range of fields and temperatures for which a thermal-equilibrium state is sufficient to improve the resolution in an NMR experiment and probe relevant parameters of the quadrupole Hamiltonian, including its anisotropy.
- Research Organization:
- University of Tennessee, Knoxville, TN (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)
- DOE Contract Number:
- SC0022311
- OSTI ID:
- 2216889
- Conference Information:
- Journal Name: Proceedings of the 29th International Conference on Low Temperature Physics (LT29)
- Country of Publication:
- United States
- Language:
- English
Similar Records
Global versus local quantum squeezing in composite systems
Orientation-Dependent Entanglement Lifetime in a Squeezed Atomic Clock
Planar quantum squeezing and atom interferometry
Journal Article
·
Fri May 15 00:00:00 EDT 2009
· Physical Review. A
·
OSTI ID:21313138
Orientation-Dependent Entanglement Lifetime in a Squeezed Atomic Clock
Journal Article
·
Fri Jun 25 00:00:00 EDT 2010
· Physical Review Letters
·
OSTI ID:21410427
Planar quantum squeezing and atom interferometry
Journal Article
·
Mon Aug 15 00:00:00 EDT 2011
· Physical Review. A
·
OSTI ID:22068485