Quantum computing with quantum-Hall edge state interferometry
نویسندگان
چکیده
منابع مشابه
Quantum Coherence of Edge States in the Quantum Hall Eect { Topological Invariants and Edge State Mixing {
Edge states in the integral quantum Hall e ect on a lattice are reviewed from a topological point of view. For a system with edges which is realized inevitably in an experimental situation, the Hall conductance xy is given by a winding number of the edge state on a complex energy surface. A relation between two topological invariants (bulk and edge) is also clari ed. In a macroscopic system, mi...
متن کاملAnomalous edge transport in the quantum anomalous Hall state.
We predict by first-principles calculations that thin films of a Cr-doped (Bi,Sb)2Te3 magnetic topological insulator have gapless nonchiral edge states coexisting with the chiral edge state. Such gapless nonchiral states are not immune to backscattering, which would explain dissipative transport in the quantum anomalous Hall (QAH) state observed in this system experimentally. Here, we study the...
متن کاملQuantum Hall State
2 Quantum Hall State Sung-Sik Lee, Shinsei Ryu, Chetan Nayak, and Matthew P. A. Fisher Kavli Institute for Theoretical Physics, University of California, Santa Barbara, California 93106-4030, USA Microsoft Research, Station Q, CNSI Building, University of California, Santa Barbara, California 93106-4030, USA Department of Physics and Astronomy, University of California, Los Angeles, California ...
متن کاملEffective - field theories for the = 52 quantum Hall edge state
The quantum Hall state at the filling fraction =5 /2 is the leading candidate to be a physical system supporting excitations with non-Abelian braid statistics. While a direct experimental evidence for the latter is still absent, recent experiments by Radu et al. I. P. Radu, J. B. Miller, C. M. Marcus, M. A. Kastner, L. N. Pfeiffer, and K. W. West, Science 320, 899 2008 yielded results favoring ...
متن کاملBinding Transition in Quantum Hall Edge States
We study a class of Abelian quantum Hall (QH) states which are topologically unstable (T-unstable). We find that the T-unstable QH states can have a phase transition on the edge which causes a binding between electrons and reduces the number of gapless edge branches. After the binding transition, the single-electron tunneling into the edge gains a finite energy gap, and only certain multi-elect...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Semiconductor Science and Technology
سال: 2019
ISSN: 0268-1242,1361-6641
DOI: 10.1088/1361-6641/ab3be6