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Ricard Puig

@pvricard.bsky.social

498 followers 335 following 45 posts

Ph.D. candidate in physics at EPFL. Working on Quantum Computing and Quantum Metrology.

Posts Replies Media

Reposted by Ricard Puig

Armando Angrisani @aangrisani.bsky.social · 01/10/2026

I’m very happy to share our new work on open quantum dynamics, out today on arXiv, with @pvricard.bsky.social, @yteng.bsky.social and @qzoeholmes.bsky.social ! Paper: scirate.com/arxiv/2609.4... Thread below 🧵

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Ricard Puig @pvricard.bsky.social · 22/06/2026

New paper on the arxiv from a couple of days ago! scirate.com/arxiv/2606.1... We re-examine the role of warm starts and parameter initialization in variational quantum algorithms. Spoiler: it's not as promising as it seems.

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Ricard Puig @pvricard.bsky.social · 17/03/2026

Small angle initialization now comes to quantum generative modeling! 🧵 In this work, we study the MMD loss landscape of quantum circuit Born machines and show the effects of data-dependent and agnostic initializations. scirate.com/arxiv/2603.1... #quantum #quantumcomputing #qml

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Ricard Puig @pvricard.bsky.social · 09/02/2026

Preparing approximate ground states has never been hotter 🔥, nor cooler🥶 scirate.com/arxiv/2602.0... In short: we combine warm-started variational quantum circuits with adiabatic principles to show how iterative training strategies can be useful to prepare approximate ground states.

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Ricard Puig @pvricard.bsky.social · 13/02/2025

New paper on arXiv 🔥 We present a bound that unifies all the previous guarantees of small regions with substantial gradients in BP landscapes. This allows us to study new architectures, parameter correlations, and points on the landscape that could not be analyzed before. scirate.com/arxiv/2502.0...

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Ricard Puig @pvricard.bsky.social · 24/01/2025

Our paper titled Variational Quantum Simulation: A Case Study for Understanding Warm Starts has been published in PRX Quantum 🚀 Short explanation 🧵 or you can find the whole paper here: journals.aps.org/prxquantum/a...

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Reposted by Ricard Puig

Zoe Holmes @qzoeholmes.bsky.social · 09/12/2024

Nature cools things easily but getting a quantum computer to do it is hard! Give us an approx ground state, we present an algorithm that approximates imaginary time evolution to: - Cool that state by an amount proportional to its energy fluctuations - Increase its fidelity with the ground state

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Ricard Puig @pvricard.bsky.social · 05/12/2024

New paper on arXiv🔥 How can many-body interactions boost quantum sensing to its limits? We show how to add controlled interactions in many-body probes to reach the highest precision limits in quantum metrology -- both for dynamical and steady states. scirate.com/arxiv/2412.0... #quantum

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Ricard Puig @pvricard.bsky.social · 02/12/2024

New paper out!! We study quantum-enhanced classical simulation. Check out @quantummanuel.bsky.social 's post or find the paper here scirate.com/arxiv/2411.1... #quantum

scirate.com

Efficient quantum-enhanced classical simulation for patches of quantum landscapes

Understanding the capabilities of classical simulation methods is key to identifying where quantum computers are advantageous. Not only does this ensure that quantum computers are used only where nece...

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