248 citations · 857 across the 15 of their papers we have counts for
15 papers
Practical Tomography of Multi-Time Processes
Abhinash Kumar Roy, Varun Srivastava, Christina Giarmatzi +1
Characterising multi-time quantum processes is essential for analysing temporally correlated noise and for designing effective control and mitigation strategies. A complete operati…
Hamiltonian characterisation of multi-time processes with classical memory
Kaumudibikash Goswami, Abhinash Kumar Roy, Varun Srivastava +4
A central problem in open quantum systems is the characterization of non-Markovian processes, where an environment retains the memory of its interaction with the system. A key dist…
Semi-device-independent certification of quantum non-Markovianity using sequential Random Access Codes
Abhinash Kumar Roy, Varun Srivastava, Soumik Mahanti +2
The characterization of multi-time correlations in open quantum systems is of fundamental importance. In this work, we investigate multi-time processes using the process matrix for…
Multi-time quantum process tomography on a superconducting qubit
Christina Giarmatzi, Tyler Jones, Alexei Gilchrist +3
Current quantum technologies are at the cusp of becoming useful, but still face formidable obstacles such as noise. Noise severely limits the ability to scale quantum devices to th…
Experimental characterisation of a non-Markovian quantum process
K. Goswami, C. Giarmatzi, C. Monterola +3
Every quantum system is coupled to an environment. Such system-environment interaction leads to temporal correlation between quantum operations at different times, resulting in non…
Witnessing quantum memory in non-Markovian processes
Christina Giarmatzi, Fabio Costa
We present a method to detect quantum memory in a non-Markovian process. We call a process Markovian when the environment does not provide a memory that retains correlations across…