20 papers · ranked by Valyu relevance
Antonio deMarti iOlius, Josu Etxezarreta Martínez, Patricio Fuentes, Pedro M. Crespo + 1 more
'Pedro M. Crespo' 'Javier Garcia-Frías'] 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 distributed (i.i.d.). However, real benchmarks of the individual relaxation (1) and dephasing (2) times of…
Avimita Chatterjee, Subrata Das, Swaroop Ghosh, Ivano Ruo-Berchera
Quantum error correction (QEC) plays a crucial role in correcting noise and paving the way for fault-tolerant quantum computing. This field has seen significant advancements, with new quantum error correction codes emerging regularly to address errors effectively. Among these, topological codes, particularly surface…
Avimita Chatterjee, Debarshi Kundu, Swaroop Ghosh, Lu Wei + 3 more
'Daiwei Zhu' 'Jason Iaconis' 'Torin F. Stetina'] In the evolving field of quantum computing, optimizing Quantum Error Correction (QEC) parameters is crucial due to the varying types and amounts of physical noise across quantum computers. Traditional simulators use a forward paradigm to derive logical error rates from…
Thomas R. Scruby, Kae Nemoto, Zhenyu Cai
We show how looped pipeline architectures-which use short-range shuttling of physical qubits to achieve bounded non-local connectivity-can efficiently implement the fault-tolerant non-Clifford gate between 2D surface codes described in (Sci. Adv. 6, eaay4929 (2020)). The shuttling schedule required is only marginally…
Antonio deMarti iOlius, Patricio Fuentes, Román Orús, Pedro M. Crespo + 1 more
'Pedro M. Crespo' 'Josu Etxezarreta Martínez'] Quantum technologies have the potential to solve certain computationally hard problems with polynomial or super-polynomial speedups when compared to classical methods. Unfortunately, the unstable nature of quantum information makes it prone to errors. For this reason…
Fang Zhang, Jianxin Chen, Giuliano Benenti
Error correction is an essential part of the theory of quantum computation. However, new quantum computation students may find the theories of error correction and fault tolerance daunting, or they may be stuck with theoretical/outdated schemes (such as the one in the original proof of the threshold theorem by Aharonov…
Tianjie Hu, Jindi Wu, Qun Li
—Quantum networks serve as the means to transmit information, encoded in quantum bits or qubits, between quantum processors that are physically separated. Given the instability of qubits, the design of such networks is challenging, necessitating a careful balance between reliability and efficiency. Typically, quantum…
Craig Gidney, Michael Newman, Peter Brooks, Cody Jones
One of the biggest obstacles to building a large scale quantum computer is the high qubit cost of protecting quantum information. For two-dimensional architectures, the surface code has long been the leading candidate quantum memory, but can require upwards of a thousand physical qubits per logical qubit to reach…
Craig Gidney, Michael Newman, Peter Brooks, Cody Jones
> We nearly triple the number of logical qubits per physical qubit of surface codes in the teraquop regime by concatenating them into high-density parity check codes. These yoked surface codes are arrayed in a rectangular grid, with parity checks (yokes) measured along each row, and optionally along each column, using…
Michele Pacenti, Mark F. Flanagan, Dimitris Chytas, Bane Vasić
—Topological quantum codes, such as toric and surface codes, are excellent candidates for hardware implementation due to their robustness against errors and their local interactions between qubits. However, decoding these codes efficiently remains a challenge: existing decoders often fall short of meeting requirements…
Emily Cairncross, Stephanie Ford, E. Lopez Garcia, Kelly Jabbusch
Toric surface codes are a class of error-correcting codes coming from a lattice polytope defining a two-dimensional toric variety. Previous authors have mostly completed classifications of these toric surface codes with dimension up to k = 7. In this note, we correct an error in the classification of the k = 7 case…
Jennifer Berg, Beth Malmskog, Mckenzie West
In this article, we construct codes with hierarchical locality using natural geometric structures in Artin-Schreier surfaces of the form y p − y = f(x, z). Our main theorem describes the codes, their hierarchical structure and recovery algorithms, and gives parameters. We also develop a family of examples using codes…
Lea Sirugue, Florent Langenfeld, Nathalie Lagarde, Matthieu Montes
The study of protein molecular surfaces enable to better understand and predict protein interactions. Different methods have been developed in computer vision to compare surfaces that can be applied to protein molecular surfaces. The present work proposes a method using the the Wave Kernel Signature : Protein LOcal…
Stanley Bram, Diego J. Orea, Graeme Lindsey, Soyu Zi + 5 more
The B cells of the human immune system have evolved somatic hypermutation (SHM) mechanisms that introduce mutations at the immunoglobulin genomic loci at a significantly higher frequency than the rest of the genome thereby allowing them to evolve antibody sequences without compromising fitness due to genome-wide…
Himanshu Swami, John M. McBride, Jean-Pierre Eckmann, Tsvi Tlusty
Protein function is executed at the molecular surface, where shape and chemistry act together to govern interaction. Yet most comparison methods treat these aspects separately, privileging either global fold or local descriptors and missing their coupled organization. Here we introduce IFACE (Intrinsic Field–Aligned…
Felipe Coelho Argolo
Conant-Ashby’s (‘good regulator’) theorem states that a simple regulator of a system must behave as an image of it. Notably, evolutionary features present in living beings often mirror natural processes, yielding symmetries between biological structures and the external environment. For instance, nervous cells can…
Kashitsyn, Dmitriy, Shabanov, Dmitriy
| Contents | | | | 3. | Chromodynamics . | | | . 9 | | |----------|------|----------------|-------------------------------------|----|------------------|------------------|------------------------------------|------|--| | 1. | | Introduction . | . 3 | | 3.1. | | Code requirements . | . 10 | | | | 1.1. | | Related work…
Emmanuel Ren, François-Xavier Coudert
Molecular adsorption in nanoporous materials has many large-scale industrial applications ranging from separation to storage. To design the best materials, computational simulations are key in guiding the experimentation and engineering processes. Because nanoporous materials exist in a plethora of forms, we need to…
Marco Pegoraro, Clémentine Dominé, Emanuele Rodolà, Petar Veličković + 1 more
Antibody-antigen interactions play a crucial role in identifying and neutralizing harmful foreign molecules. In this paper, we investigate the optimal representation for predicting the binding sites in the two molecules and emphasize the importance of geometric information. Specifically, we compare different geometric…
Sung Sakong, Axel Groß, R. Jürgen Behm
As an example for bimetallic surfaces in general, we have systematically investigated the thermodynamic surface properties of bimetallic Ag/Pt(111) and Ag/Pd(111) surfaces, including pseudomorphic Ag film covered surfaces and M1Ag3/M(111) (M = Pt, Pd) monolayer surface alloys, by periodic density functional theory…