110 citations · 849 across the 52 of their papers we have counts for
17 papers · 1 filter
Born-Oppenheimer and the Geometry of Ray Space
Joseph Samuel
It is known that, within the Born-Oppenheimer approximation, the slow modes of the nuclear motion are altered by three effects that emerge from integrating out the fast modes of th…
Pancharatnam-Zak phase
Vivek M. Vyas, Dibyendu Roy
Three decades ago, in a celebrated work, Zak found an expression for the geometric phase acquired by an electron in a one-dimensional periodic lattice as it traverses the Bloch ban…
Likelihood Theory in a Quantum World: tests with Quantum coins and computers
Arpita Maitra, Joseph Samuel, Supurna Sinha
By repeated trials, one can determine the fairness of a classical coin with a confidence which grows with the number of trials. A quantum coin can be in a superposition of heads an…
A Physical Perspective on Classical Cloning
Anirudh Reddy, Joseph Samuel, Supurna Sinha
The celebrated quantum no-cloning theorem states that an arbitrary quantum state cannot be cloned perfectly. This raises questions about cloning of classical states, which have als…
Lorentzian geometry of qubit entanglement
Joseph Samuel, Kumar Shivam, Supurna Sinha
We study the relation between qubit entanglement and Lorentzian geometry. In an earlier paper, we had given a recipe for detecting two qubit entanglement. The entanglement criterio…
Detecting qubit entanglement : an alternative to the PPT test
Joseph Samuel, Kumar Shivam, Supurna Sinha
We propose a Partial Lorentz Transformation (PLT) test for detecting entanglement in a two qubit system. One can expand the density matrix of a two qubit system in terms of a tenso…