Quantum routing with fast reversal of qubits

A patent filing for our fast reversal sorting protocol.

May 20, 2024 · Aniruddha Bapat, Andrew M Childs, Alexey V Gorshkov, Samuel King, Eddie Schoute, Hrishee Shastri

Quench dynamics of the Schwinger model via variational quantum algorithms

We investigate the real-time dynamics of the $(1+1)$-dimensional $U(1)$ gauge theory known as the Schwinger model via variational quantum algorithms.

Advantages and limitations of quantum routing

We lower bound the circuit depth or time required for quantum routing in terms of spectral properties of graphs representing the architecture interaction constraints, and give a generalized upper bound for all simple connected $n$-vertex graphs.

February 1, 2023 · Aniruddha Bapat, Andrew M Childs, Alexey V Gorshkov, Eddie Schoute

Performing bang-anneal-bang quantum optimization

we carry out simulations of optimal control protocols for energy minimization on various transverse field Ising models, demonstrating that optimal protocols typically exhibit a bang-anneal-bang pattern.

November 17, 2022 · Lucas T Brady, Christopher L Baldwin, Aniruddha Bapat, Yaroslav Kharkov, Alexey V Gorshkov

Performing state reversal on a quantum spin chain

Patent for our spin chain reversal protocol.

August 25, 2022 · Alexey V Gorshkov, Aniruddha Bapat, Eddie Schoute, Andrew Childs

Estimating gate complexities for the site-by-site preparation of fermionic vacua

In this paper, we study the scaling of the overlap between an $N$- and $(N+1)$-site ground state, as a function of the number of sites $N$, for a range of quadratic fermionic Hamiltonians.

Quantum routing with teleportation

We study the problem of implementing arbitrary permutations of qubits under interaction constraints in quantum systems that allow for arbitrarily fast local operations and classical communication (LOCC).

April 8, 2022 · Dhruv Devulapalli, Eddie Schoute, Aniruddha Bapat, Andrew M Childs, Alexey V Gorshkov

Nearly optimal time-independent reversal of a spin chain

We propose a time-independent Hamiltonian protocol for the reversal of qubit ordering in a chain of $N$ spins.

February 22, 2022 · Aniruddha Bapat, Eddie Schoute, Alexey V Gorshkov, Andrew M Childs

Quantum routing with fast reversals

We present methods for implementing arbitrary permutations of qubits under interaction constraints.

August 31, 2021 · Aniruddha Bapat, Andrew M Childs, Alexey V Gorshkov, Samuel King, Eddie Schoute, Hrishee Shastri

Design and Optimization in Near-Term Quantum Computation

My PhD thesis.