EXCITED STATES IN MONOLAYER TRANSITION METAL DICHALCOGENIDES
Dissertation Committee Chair: Mohammad Hafezi
Committee:
Sunil Mittal
Glenn Solomon
Ichiro Takeuchi
You Zhou
Harnessing the ultimate quantum-enhanced sensitivity in distributed quantum sensing with squeezed light
Abstract: Distributed quantum sensing is an exciting emerging research field aimed at harnessing quantum resources to achieve quantum-enhanced sensitivity in the estimation of single or multiple parameters, including temperature, electromagnetic and gravitational fields, distributed in a given quantum network. In particular, squeezing is a well established resource given its feasibility and robustness to decoherence with respect to entangled sources.
Neural-Network Decoders for Measurement Induced Phase Transitions
Abstract: Monitored random unitary circuits with intermittent measurements can host a phase transition between a pure and a mixed phase with different entanglement entropy behaviors with the system size. Recently, it was demonstrated that these phase transitions can be locally probed via entangling reference qubits to the quantum circuit and studying the purification dynamics of the reference qubits. After disentangling from the circuit, the state of the reference qubit can be determined according to the measurement outcomes of the qubits in the circuit.
Simulating the Schwinger Model and Testing Symmetry Protection with Trapped Ions
Abstract: Gauge theory is a powerful theoretical framework for understanding the fundamental forces in the standard model. Simulating the real time dynamics of gauge theory, especially in the strong coupling regime, is a challenging classical problem. Quantum computers o ffer a solution to this problem by taking advantage of the intrinsic quantum nature of the systems. The Schwinger model, that is the 1+1 dimensional U(1) gauge theory coupled to fermions, has served as a testbed for different methods of quantum simulation.