activity
20242026
collaborators

7 papers

quant-ph2026

Spin models with critical ground space degeneracy from Lie algebra relations

Andras Molnar, Efekan Kökcü, Norbert Schuch +1

We introduce an -symmetric spin model derived from the algebraic structure of : It is obtained as the nearest-neighbor parent Hamiltonian of a Mat…

quant-ph2026

Challenges in Barren Plateau Mitigation with Dynamic Parameterized Quantum Circuits

Sumeet Shirgure, Efekan Kökcü, Siyuan Niu

Variational quantum algorithms (VQAs) are a promising paradigm for quantum advantage, yet their trainability is severely hampered by barren plateaus (BPs). Several recent works hav…

quant-ph2026

Characterizing and Benchmarking Dynamic Quantum Circuits

Sumeet Shirgure, Efekan Kökcü, Anupam Mitra +3

Dynamic quantum circuits with mid-circuit measurements (MCMs) and feed-forward operations play a crucial role in various applications, such as quantum error correction and quantum…

quant-ph2025

QTurbo: A Robust and Efficient Compiler for Analog Quantum Simulation

Junyu Zhou, Yuhao Liu, Shize Che +5

Analog quantum simulation leverages native hardware dynamics to emulate complex quantum systems with great efficiency by bypassing the quantum circuit abstraction. However, convent…

quant-ph2025

Algebraic Compression of Free Fermionic Quantum Circuits: Particle Creation, Arbitrary Lattices and Controlled Evolution

Efekan Kökcü, Daan Camps, Lindsay Bassman Oftelie +3

Recently we developed a local and constructive algorithm based on Lie algebraic methods for compressing Trotterized evolution under Hamiltonians that can be mapped to free fermions…

quant-ph2025

A Practical Framework for Assessing the Performance of Observable Estimation in Quantum Simulation

Siyuan Niu, Efekan Kökcü, Sonika Johri +5

Simulating dynamics of physical systems is a key application of quantum computing, with potential impact in fields such as condensed matter physics and quantum chemistry. However,…