Quantum phase transitions out of a Z(2) x Z(2) topological phase

Jahromi SS, Masoudi SF, Kargarian M, Schmidt KP (2013)

Publication Status: Published

Publication Type: Journal article

Publication year: 2013

Journal

Physical Review B American Physical Society

Publisher: AMER PHYSICAL SOC

Book Volume: 88

Journal Issue: 21

DOI: 10.1103/PhysRevB.88.214411

Abstract

We investigate the low-energy spectral properties and robustness of the topological phase of color code, which is a quantum spin model for the aim of fault-tolerant quantum computation, in the presence of a uniform magnetic field or Ising interactions, using high-order series expansion and exact diagonalization. In a uniform magnetic field, we find first-order phase transitions in all field directions. In contrast, our results for the Ising interactions unveil that for strong enough Ising couplings, the Z(2) x Z(2) topological phase of color code breaks down to symmetry broken phases by first-or second-order phase transitions.

Authors with CRIS profile

Kai Phillip Schmidt Professur für Theoretische Physik

Involved external institutions

Khajeh Nasir Toosi University of Technology (KNTU) / دانشگاه صنعتی خواجه نصيرالدين طوسی‎‎ IR Iran, Islamic Republic of (IR) University of Texas at Austin US United States (USA) (US)

How to cite

APA:

Jahromi, S.S., Masoudi, S.F., Kargarian, M., & Schmidt, K.P. (2013). Quantum phase transitions out of a Z(2) x Z(2) topological phase. Physical Review B, 88(21). https://dx.doi.org/10.1103/PhysRevB.88.214411

MLA:

Jahromi, Saeed S., et al. "Quantum phase transitions out of a Z(2) x Z(2) topological phase." Physical Review B 88.21 (2013).

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