54 citations · 137 across the 25 of their papers we have counts for
22 papers · 1 filter
A quantum generative model for in silico clinical trials using scarce training datasets
Olatz Sanz Larrarte, Reza Dastbasteh, Roberto Sanchez-Navarro +7
In silico methods have emerged as a strategy to complement clinical trials. These are particularly relevant for rare or heterogeneous diseases for which traditional methods are cos…
Quantum Codes with Arbitrary Z-Rotation logical Gates and Applications to Fault-Tolerant Code Switching
Reza Dastbasteh, Ruben M. Otxoa, Pedro M. Crespo +1
A technique for realizing a universal set of fault-tolerant quantum operations is the code switching method, which leverages two quantum codes with complementary sets of transversa…
Surface-Code Thresholds and Qubit Footprints in Shuttling-Based Spin-Qubit Railways
Arun John Moncy, Reza Dastbasteh, Josu Etxezarreta Martinez +5
We present a fault-tolerant mapping of rotated surface codes onto a silicon spin-qubit railway architecture, utilizing electron shuttling to resolve the wiring fan-out…
Noise mitigation of quantum observables via learning from Hamiltonian symmetry decays
Javier Oliva del Moral, Olatz Sanz Larrarte, Joana Fraxanet +2
We present a new quantum error mitigation technique (QEM), called GUiding Extrapolations from Symmetry decayS (GUESS), which exploits Hamiltonian symmetries to improve accuracy of…
Forecasting Quantum Observables: A Compressed Sensing Approach with Performance Guarantees
Víctor Valls, Albert Akhriev, Olatz Sanz Larrarte +5
Data-driven extrapolation methods aim to extend the dynamics of quantum observables from measurements, but they often lack guarantees on prediction accuracy. We introduce a framewo…
Leveraging biased noise for more efficient quantum error correction at the circuit-level with two-level qubits
Josu Etxezarreta Martinez, Paul Schnabl, Javier Oliva del Moral +3
Tailoring quantum error correction codes (QECC) to biased noise has demonstrated significant benefits. However, most of the prior research on this topic has focused on code capacit…
SpinHex: A low-crosstalk, spin-qubit architecture based on multi-electron couplers
Rubén M. Otxoa, Josu Etxezarreta Martinez, Paul Schnabl +3
Semiconductor spin qubits are an attractive quantum computing platform that offers long qubit coherence times and compatibility with existing semiconductor fabrication technology f…
Asymptotically good CSS-T codes and a new construction of triorthogonal codes
Elena Berardini, Reza Dastbasteh, Josu Etxezarreta Martinez +2
We propose a new systematic construction of CSS-T codes from any given CSS code using a map . When is the identity map , we retrieve the construction of [1] and use it to…
Impact of leakage on the dynamics of a ST qubit implemented in a Double Quantum Dot device
Javier Oliva del Moral, Olatz Sanz Larrarte, Reza Dastbasteh +2
Spin qubits in quantum dots are a promising technology for quantum computing due to their fast response time and long coherence times. An electromagnetic pulse is applied to the sy…
Hacking Cryptographic Protocols with Tensor Network Attacks
Borja Aizpurua, Siddhartha Patra, Josu Etxezarreta Martinez +1
Here we introduce the application of Tensor Networks (TN) to launch attacks on symmetric-key cryptography. Our approaches make use of Matrix Product States (MPS) as well as our rec…
An almost-linear time decoding algorithm for quantum LDPC codes under circuit-level noise
Antonio deMarti iOlius, Imanol Etxezarreta Martinez, Joschka Roffe +1
Fault-tolerant quantum computers must be designed in conjunction with classical co-processors that decode quantum error correction measurement information in real-time. In this wor…
Comment on "Recovering noise-free quantum observables"
Josu Etxezarreta Martinez, Olatz Sanz Larrarte, Javier Oliva del Moral +2
Zero-noise extrapolation (ZNE) stands as the most widespread quantum error mitigation technique in order to aim the recovery of noise-free expectation values of observables of inte…
The closed-branch decoder for quantum LDPC codes
Antonio deMarti iOlius, Josu Etxezarreta Martinez
Quantum error correction is the building block for constructing fault-tolerant quantum processors that can operate reliably even if its constituting elements are corrupted by decoh…
Hacking Cryptographic Protocols with Advanced Variational Quantum Attacks
Borja Aizpurua, Pablo Bermejo, Josu Etxezarreta Martinez +1
Here we introduce an improved approach to Variational Quantum Attack Algorithms (VQAA) on crytographic protocols. Our methods provide robust quantum attacks to well-known cryptogra…
Decoding algorithms for surface codes
Antonio deMarti iOlius, Patricio Fuentes, Román Orús +2
Quantum technologies have the potential to solve certain computationally hard problems with polynomial or super-polynomial speedups when compared to classical methods. Unfortunatel…
The superadditivity effects of quantum capacity decrease with the dimension for qudit depolarizing channels
Josu Etxezarreta Martinez, Antonio deMarti iOlius, Pedro M. Crespo
Quantum channel capacity is a fundamental quantity in order to understand how good can quantum information be transmitted or corrected when subjected to noise. However, it is gener…
Performance enhancement of surface codes via recursive MWPM decoding
Antonio deMarti iOlius, Josu Etxezarreta Martinez, Patricio Fuentes +1
The minimum weight perfect matching (MWPM) decoder is the standard decoding strategy for quantum surface codes. However, it suffers a harsh decrease in performance when subjected t…
Multi-qubit time-varying quantum channels for NISQ-era superconducting quantum processors
Josu Etxezarreta Martinez, Patricio Fuentes, Antonio deMarti iOlius +3
Recent experimental studies have shown that the relaxation time () and the dephasing time () of superconducting qubits fluctuate considerably over time. To appropriately…
Performance of surface codes in realistic quantum hardware
Antonio deMarti iOlius, Josu Etxezarreta Martinez, Patricio Fuentes +2
Surface codes are generally studied based on the assumption that each of the qubits that make up the surface code lattice suffers noise that is independent and identically distribu…
Decoherence and Quantum Error Correction for Quantum Computing and Communications
Josu Etxezarreta Martinez
Quantum technologies have shown immeasurable potential to effectively solve several information processing tasks such as prime number factorization, unstructured database search or…
Quantum outage probability for time-varying quantum channels
Josu Etxezarreta Martinez, Patricio Fuentes, Pedro Crespo +1
Recent experimental studies have shown that the relaxation time, , and the dephasing time, , of superconducting qubits fluctuate considerably over time. Time-varying quan…
On the logical error rate of sparse quantum codes
Patricio Fuentes, Josu Etxezarreta Martinez, Pedro M. Crespo +1
The quantum paradigm presents a phenomenon known as degeneracy that should improve the performance of quantum error correcting codes. However, the effects of this mechanism are som…