5 papers
Revival of transport reciprocity via quantum interference in asymmetric nonlinear devices
Rupak Bag, Dibyendu Roy
Structural asymmetry combined with optical nonlinearity often leads to nonreciprocal light transport. We explore the mechanism by which 1-photon interference effects can revive rec…
Leading and beyond leading-order spectral form factor in chaotic quantum many-body systems across all Dyson symmetry classes
Vijay Kumar, Tomaž Prosen, Dibyendu Roy
We show the emergence of random matrix theory (RMT) spectral correlations in the chaotic phase of generic periodically kicked interacting quantum many-body systems by analytically…
Nonreciprocal electrical transport in linear systems with balanced gain and loss in the bulk
Rupak Bag, Dibyendu Roy
We investigate electrical transport in a quantum wire of sites connected to an equal number of sources and drains of charges in bulk. Each source and drain injects an…
Detecting winding and Chern numbers in topological matter using spectral function
Kiran Babasaheb Estake, Dibyendu Roy
We propose a method to directly probe bulk topological quantum numbers in topological matter by measuring the momentum-space single-particle spectral function (SPSF). Angle-resolve…
Quantum noise induced nonreciprocity for single photon transport in parity-time symmetric systems
Dibyendu Roy, G. S. Agarwal
We show nonreciprocal light propagation for single-photon inputs due to quantum noise in coupled optical systems with gain and loss. We consider two parity-time () sy…