Authors: | Suter, Dieter Zhang, Jingfu Peng, Xinhua Rajendran, Nageswaran |
Title: | Detection of Quantum Critical Points by a Probe Qubit |
Language (ISO): | en |
Abstract: | Quantum phase transitions occur when the ground state of a quantum system undergoes a qualitative change when an external control parameter reaches a critical value. Here, we demonstrate a technique for studying quantum systems undergoing a phase transition by coupling the system to a probe qubit. It uses directly the increased sensibility of the quantum system to perturbations when it is close to a critical point. Using an NMR quantum simulator, we demonstrate this measurement technique for two different types of quantum phase transitions in an Ising spin chain. |
URI: | http://hdl.handle.net/2003/25408 http://dx.doi.org/10.17877/DE290R-2907 |
Publishers Link: | https://e3.physik.tu-dortmund.de/~suter/eprints/134_QPT_by_ProbeQubit.pdf |
Issue Date: | 2008-03-13 |
Provenance: | The American Physical Society |
URL: | http://dx.doi.org/10.1103/PhysRevLett.100.100501 |
Citation: | Zhang, Jingfu; Peng, Xinhua; Rajendran, Nageswaran; Suter, Dieter: Detection of Quantum Critical Points by a Probe Qubit. In: Physical Review Letters Jg. 100(2008), 100501. |
Appears in Collections: | Suter, Dieter Prof. Dr. |
Files in This Item:
There are no files associated with this item.
This item is protected by original copyright |
This item is protected by original copyright rightsstatements.org