Lan, Z;
Li, W;
Lesanovsky, I;
(2016)
Quantum melting of two-component Rydberg crystals.
Physical Review A
, 94
(5)
, Article 051603(R). 10.1103/PhysRevA.94.051603.
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Abstract
We investigate the quantum melting of one-dimensional crystals that are realized in an atomic lattice in which ground state atoms are laser excited to two Rydberg states. We focus on a regime where both, intra- and interstate density-density interactions as well as coherent exchange interactions contribute. We determine stable crystalline phases in the classical limit and explore their melting under quantum fluctuations introduced by the excitation laser as well as two-body exchange. We find that within a specific parameter range quantum fluctuations introduced by the laser can give rise to a devil's staircase structure which one might associate with transitions in the classical limit. The melting through exchange interactions is shown to also proceed in a steplike fashion, in the case of small crystals, due to the proliferation of Rydberg spin waves.
| Type: | Article |
|---|---|
| Title: | Quantum melting of two-component Rydberg crystals |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevA.94.051603 |
| Publisher version: | https://doi.org/10.1103/PhysRevA.94.051603 |
| Language: | English |
| Additional information: | This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Science & Technology, Physical Sciences, Optics, Physics, Atomic, Molecular & Chemical, Physics, GAS, EXCITATION, BLOCKADE, SYSTEMS, REGIME, RANGE, ATOMS, MODEL |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10066560 |
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