QUANTUM TELECLONING CIRCUITS: THEORY & PRACTICE
Master’s Degree Thesis Defense Bryan Garcia
Mentor: Dr. Boris Kiefer

When: Wednesday 04/06/2022; 9-11am

Where: Gardiner Hall, 218

Online: https://nmsu.zoom.us/j/98049584151 Meeting ID: 980 4958 4151

Abstract

Quantum Information Science (QIS) is an interdisciplinary field that uses quantum mechanical principles for acquisition, encoding, and manipulation of information. A fascinating challenge in the context of quantum information processing is to exchange information between one sender and multiple recipients, similar in style to a classical conference call. Unfortunately, the laws of quantum mechanics and especially the no- cloning theorem impose severe restrictions on the quality of quantum conference calls. In my thesis research I investigated a quantum communication scheme, for the transmission of one message to two recipients. I tested and validated telecloning circuits on quantum simulators, followed by their implementation on IBMQ quantum hardware. After CNOT gate count reduction, custom transpilation, circuit connectivity mapping, and discarding low performing qubits, I observed average telecloning fidelities of ~78%-79%, close to the theoretical maximum of 83.3% for deterministic telecloning. These results suggest that even in a noisy intermediate-scale quantum (NISQ) era of quantum computing, near optimal circuit performance can be achieved, signaling a bright future even for imperfect quantum computing architectures.