24 citations · 98 across the 10 of their papers we have counts for
10 papers
SNS Junctions along the BCS-BEC Crossover
Gautam Rai, Arman Babakhani, Ying Wang +2
We present a theory of SNS junctions, a normal metal sandwiched between two superconductors, along the crossover from the BCS to the BEC regime. We calculate the Josephson current…
Superconductivity in the Fibonacci Chain
Ying Wang, Gautam Rai, Chris Matsumura +2
Superconductivity was recently reported in several quasicrystalline systems. These are materials which are structurally ordered, but since they are not translationally invariant, t…
Edge and corner superconductivity in a 2D topological model
Ying Wang, Gautam Rai, Stephan Haas +1
We consider a two-dimensional generalization of the Su-Schrieffer-Heeger model which is known to possess a non-trivial topological band structure. For this model, which is characte…
Real-space BCS-BEC crossover in FeSe monolayer
Haicheng Lin, Wantong Huang, Gautam Rai +7
The quantum many body states in the BCS-BEC crossover regime are of long-lasting interest. Here we report direct spectroscopic evidence of BCS-BEC crossover in real-space in a FeSe…
Bulk topological signatures of a quasicrystal
Gautam Rai, Henning Schlömer, Chris Matsumura +2
We show how measuring real space properties such as the charge density in a quasiperiodic system can be used to gain insight into their topological properties. In particular, for t…
Superconducting proximity effect and order parameter fluctuations in disordered and quasiperiodic systems
Gautam Rai, Stephan Haas, Anuradha Jagannathan
We study the superconducting proximity effect in inhomogeneous systems in which a disordered or quasicrystalline normal-state wire is connected to a BCS superconductor. We self-con…
Spatial BCS-BEC crossover in superconducting p-n junctions
A. Niroula, G. Rai, S. Haas +1
We present a theory of superconducting p-n junctions. We consider a 2-band model of doped bulk semiconductors with attractive interactions between the charge carriers and derive th…
Induced superconducting pair correlations in a quasicrystal coupled to a BCS superconductor
Gautam Rai, Stephan Haas, Anuradha Jagannathan
In this report, we describe the proximity effect which arises when a quasicrystal is placed in contact with a superconductor. We consider the simplest known model of a quasicrystal…
The Proximity Effect in a Superconductor-Quasicrystal Hybrid Ring
Gautam Rai, Stephan Haas, Anuradha Jagannathan
We compute the real-space profile of the superconducting order parameter (OP) in a hybrid ring that consists of a 1D superconductor connected to a Fibonacci chain using a self-cons…
Entanglement thresholds for displaying the quantum nature of teleportation
Luis Roa, Robinson Gómez, Ariana Muñoz +1
A protocol for transferring an unknown single qubit state has quantum features when the average fidelity of the outcomes is greater than 2/3. We use the probabilistic and unambiguo…