37 citations · 90 across the 13 of their papers we have counts for
6 papers · 1 filter
Single and double quantum transitions in spin-mixed states under photo-excitation
Anand Patel, Zainab Chowdhry, Anil Prabhakar +2
Electronic spins associated with the Nitrogen-Vacancy (NV) center in diamond offer an opportunity to study spin-related phenomena with extremely high sensitivity owing to their hig…
Explicit attacks on differential phase shift quantum key distribution
Valliamai Ramanathan, Anil Prabhakar, Prabha Mandayam
In the well-established framework of quantum key distribution (QKD), differential phase shift (DPS) protocols have known information-theoretic security bounds defining tolerable er…
QKD in the NISQ era: enhancing secure key rates via quantum error correction
Shashank Kumar Ranu, Anil Prabhakar, Prabha Mandayam
Error mitigation is one of the key challenges in realising the full potential of quantum cryptographic protocols. Consequently, there is a lot of interest in adapting techniques fr…
Gated InGaAs Detector Characterization with Sub-Picosecond Weak Coherent Pulses
Gautam Kumar Shaw, Shyam Sridharan, Anil Prabhakar
We propose and demonstrate a method to characterize a gated InGaAs single-photon detector (SPD). Ultrashort weak coherent pulses, from a mode-locked sub-picosecond pulsed laser, we…
Equivalence of space and time-bins in DPS-QKD
Gautam Shaw, Shyam Sridharan, Shashank Ranu +3
Key generation efficiency, and security, in DPS-QKD improve with an increase in the number of path delays or time-bin superpositions. We demonstrate the implementation of super-pos…
Differential phase encoded measurement-device-independent quantum key distribution
Shashank Kumar Ranu, Anil Prabhakar, Prabha Mandayam
We present a measurement-device-independent quantum key distribution (MDI-QKD) using single photons in a linear superposition of three orthogonal time-bin states, for generating th…