5 papers
Optimal enhancement of the Overhauser and Solid Effects within a unified framework
Sarfraj Fency, Rangeet Bhattacharyya
The Overhauser effect (OE) and the Solid effect (SE) are two Dynamic Nuclear Polarization techniques. These two-spin techniques are widely used to create nonequilibrium nuclear spi…
Discrete Time Crystals in Noninteracting Dissipative Systems
Gourab Das, Saptarshi Saha, Rangeet Bhattacharyya
Many-body quantum systems, under suitable conditions, exhibit time-translation symmetry breaking and settle in a discrete time crystalline (DTC) phase -- an out-of-equilibrium quan…
Determination of Fluctuation correlation time in solid-state Nuclear Magnetic Resonance
Saptarshi Saha, Rangeet Bhattacharyya
Solid-state NMR provides a wide variety of experimental techniques to detect and analyze a material's chemical and physical environment. Here, we offer a theoretical demonstration…
Quantum Speed Limit in Driven-dissipative Systems
Sarfraj Fency, Riddhi Chatterjee, Rangeet Bhattacharyya
Every quantum operation that takes a system from one state to another is known to have bounds on operation time, due to Heisenberg uncertainty principle. In open quantum systems (O…
Emergence of superradiance in dissipative dipolar-coupled spin systems
Saptarshi Saha, Yeshma Ibrahim, Rangeet Bhattacharyya
In the superradiance phenomenon, a collection of non-interacting atoms exhibits collective dissipation due to interaction with a common radiation field, resulting in a non-monotoni…