Ibrahim Shehzad
ibrahims16.bsky.social
Ibrahim Shehzad
@ibrahims16.bsky.social
Physicist turned quantum algorithm developer
This looks really useful, thank you! I've tried accessing some of the pdf's and I keep running into "error rendering embedded code: invalid pdf." Perhaps I am missing something?
June 2, 2025 at 12:44 PM
Reposted by Ibrahim Shehzad
Here is a 'simple' 3-line proof for this statement!

(Although the simplicity hides behind the form and properties of the matrix geometric mean.)
March 14, 2025 at 5:24 PM
Reposted by Ibrahim Shehzad
Clifford-based proxy circuits reliably approximate generic circuit fidelities under error models admitting Pauli twirling, addressing concerns about overlooked errors.
arxiv.org/abs/2503.05943
When Clifford benchmarks are sufficient; estimating application performance with scalable proxy circuits
The goal of benchmarking is to determine how far the output of a noisy system is from its ideal behavior; this becomes exceedingly difficult for large quantum systems where classical simulations becom...
arxiv.org
March 11, 2025 at 1:35 PM
Reposted by Ibrahim Shehzad
A new paper presents the first quantum hardware computation of electron spin resonance hyperfine coupling constants using a qubit-ADAPT approach with unrestricted orbital optimization.
arxiv.org/abs/2503.09214
Hyperfine Coupling Constants on Quantum Computers: Performance, Errors, and Future Prospects
We present the first implementation and computation of electron spin resonance isotropic hyperfine coupling constants (HFCs) on quantum hardware. As illustrative test cases, we compute the HFCs for th...
arxiv.org
March 13, 2025 at 12:22 PM
Reposted by Ibrahim Shehzad
A new paper introduces a quantum solver for partial differential equations using a matrix product operator representation, enabling non-unitary evolution via mid-circuit measurements and norm corrections, demonstrated on Euler equations with absorbing boundaries.
arxiv.org/abs/2502.04425
Tensor-Programmable Quantum Circuits for Solving Differential Equations
We present a quantum solver for partial differential equations based on a flexible matrix product operator representation. Utilizing mid-circuit measurements and a state-dependent norm correction, thi...
arxiv.org
February 10, 2025 at 1:37 PM
Reposted by Ibrahim Shehzad
Of course, these are only simple toy models, and miss most features of proper (quantum) gravity. But the upshot is that going from semiclassical to quantum gravity states is essentially a qubit compression task!
January 3, 2025 at 11:26 AM