10 papers
Loopless multiterminal quantum circuits at odd parity
Antonio Manesco, Anton Akhmerov, Valla Fatemi
We theoretically investigate loopless multiterminal hybrid superconducting devices at odd fermion parity with time-reversal symmetry. We find that the energy-phase relationship has…
Strain engineering of Andreev spin qubits in Germanium
Vittorio Coppini, Patrick Del Vecchio, Antonio L. R. Manesco +4
Planar germanium heterostructures are promising hosts for hybrid quantum devices due to their compatibility with superconductors, low material disorder, and relaxed fabrication con…
Isotropic 3D topological phases with broken time reversal symmetry
Helene Spring, Anton R. Akhmerov, Daniel Varjas
Axial vectors, such as current or magnetization, are commonly used order parameters in time-reversal symmetry breaking systems. These vectors also break isotropy in three dimension…
Scattering theory of higher order topological phases
R. Johanna Zijderveld, Isidora Araya Day, Anton R. Akhmerov
The surface states of intrinsic higher order topological phases are protected by the spatial symmetries of a finite sample. This property makes the existing scattering theory of to…
Chiral adiabatic transmission protected by Fermi surface topology
Isidora Araya Day, Kostas Vilkelis, Antonio L. R. Manesco +3
We demonstrate that Andreev modes that propagate along a transparent Josephson junction have a perfect transmission at the point where three junctions meet. The chirality and the n…
Kramers-protected hardware-efficient error correction with Andreev spin qubits
Haoran Lu, Isidora Araya Day, Anton R. Akhmerov +2
We propose an architecture for bit-flip error correction of Andreev spins that is protected by Kramers' degeneracy. Specifically, we show that a coupling network of linear inductor…