Topological quantum computation assisted by phase transitions
- URL: http://arxiv.org/abs/2311.00103v2
- Date: Thu, 2 Nov 2023 20:10:31 GMT
- Title: Topological quantum computation assisted by phase transitions
- Authors: Yuanjie Ren and Peter Shor
- Abstract summary: We investigate the anyon tunneling map, denoted as $varphi$, between subphases of the quantum double model $mathcalD(G)$ for any arbitrary finite group $G$.
We conclude by demonstrating how phase transitions in both the temporal and spatial directions can enhance the diversity of topological gates for general topological orders described by modular tensor categories.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: In this paper, we explore topological quantum computation augmented by
subphases and phase transitions. We commence by investigating the anyon
tunneling map, denoted as $\varphi$, between subphases of the quantum double
model $\mathcal{D}(G)$ for any arbitrary finite group $G$. Subsequently, we
delve into the relationship between $\varphi$ and the Floquet code, and extend
the Abelian Floquet code to encompass non-abelian cases. We conclude by
demonstrating how phase transitions in both the temporal and spatial directions
can enhance the diversity of topological gates for general topological orders
described by modular tensor categories.
Related papers
- KPZ scaling from the Krylov space [83.88591755871734]
Recently, a superdiffusion exhibiting the Kardar-Parisi-Zhang scaling in late-time correlators and autocorrelators has been reported.
Inspired by these results, we explore the KPZ scaling in correlation functions using their realization in the Krylov operator basis.
arXiv Detail & Related papers (2024-06-04T20:57:59Z) - Probing quantum floating phases in Rydberg atom arrays [61.242961328078245]
We experimentally observe the emergence of the quantum floating phase in 92 neutral-atom qubits.
The site-resolved measurement reveals the formation of domain walls within the commensurate ordered phase.
As the experimental system sizes increase, we show that the wave vectors approach a continuum of values incommensurate with the lattice.
arXiv Detail & Related papers (2024-01-16T03:26:36Z) - Dynamical characterization of $Z_{2}$ Floquet topological phases via quantum quenches [4.927579219242575]
We develop the first full and unified dynamical characterization theory for the $Z_2$ Floquet topological phases.
By measuring the minimal information of Floquet bands via the stroboscopic time-averaged spin polarizations, we show that the topological spin texture patterns emerging on certain discrete momenta of Brillouin zone.
Our work provides a highly feasible way to detect the $Z_2$ Floquet topology and completes the dynamical characterization for the full classes of Floquet topological phases.
arXiv Detail & Related papers (2023-10-31T19:43:08Z) - Generating many Majorana corner modes and multiple phase transitions in
Floquet second-order topological superconductors [0.0]
We find a wide variety of Floquet second-order topological superconducting (SOTSC) phases with many Majorana corner modes at both zero and $pi$ quasienergies.
Our discovery not only enriches the possible forms of Floquet SOTSC phases, but also offers an efficient scheme to generate many coexisting Majorana zero and $pi$ corner modes.
arXiv Detail & Related papers (2022-10-25T06:05:14Z) - Hidden orders and phase transitions for the fully packed quantum loop model on the triangular lattice [4.795065373710478]
Quantum loop and dimer models are prototypical correlated systems with local constraints.
We reveal the complete phase diagram of the triangular-lattice fully packed quantum loop model.
Our results are of relevance to recent developments in both experiments and theory, and facilitate further investigations of hidden phases and transitions.
arXiv Detail & Related papers (2022-05-09T18:00:00Z) - Topological fracton quantum phase transitions by tuning exact tensor
network states [1.0753191494611891]
Gapped fracton phases of matter generalize the concept of topological order.
We employ an exact 3D quantum tensor-network approach to study a prototypical X cube fracton model.
arXiv Detail & Related papers (2022-02-28T19:00:01Z) - Topological transitions with continuously monitored free fermions [68.8204255655161]
We show the presence of a topological phase transition that is of a different universality class than that observed in stroboscopic projective circuits.
We find that this entanglement transition is well identified by a combination of the bipartite entanglement entropy and the topological entanglement entropy.
arXiv Detail & Related papers (2021-12-17T22:01:54Z) - Towards a complete classification of non-chiral topological phases in 2D fermion systems [29.799668287091883]
We argue that all non-chiral fermionic topological phases in 2+1D are characterized by a set of tensors $(Nij_k,Fij_k,Fijm,alphabeta_kln,chidelta,n_i,d_i)$.
Several examples with q-type anyon excitations are discussed, including the Fermionic topological phase from Tambara-gami category for $mathbbZ_2N$.
arXiv Detail & Related papers (2021-12-12T03:00:54Z) - Quantum critical phase transition between two topologically-ordered
phases in the Ising toric code bilayer [0.0]
We show that two toric code layers on the square lattice coupled by an Ising interaction display two distinct phases with intrinsic topological order.
The second-order quantum phase transition between the weakly-coupled $mathbbZtimesmathbbZ$ and the strongly-coupled $mathbbZ$ can be described by the condensation of bosonic quasiparticles from both sides.
arXiv Detail & Related papers (2020-10-12T19:16:36Z) - Unraveling the topology of dissipative quantum systems [58.720142291102135]
We discuss topology in dissipative quantum systems from the perspective of quantum trajectories.
We show for a broad family of translation-invariant collapse models that the set of dark state-inducing Hamiltonians imposes a nontrivial topological structure on the space of Hamiltonians.
arXiv Detail & Related papers (2020-07-12T11:26:02Z) - Bulk detection of time-dependent topological transitions in quenched
chiral models [48.7576911714538]
We show that the winding number of the Hamiltonian eigenstates can be read-out by measuring the mean chiral displacement of a single-particle wavefunction.
This implies that the mean chiral displacement can detect the winding number even when the underlying Hamiltonian is quenched between different topological phases.
arXiv Detail & Related papers (2020-01-16T17:44:52Z)
This list is automatically generated from the titles and abstracts of the papers in this site.
This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.