295 citations · 1.9k across the 28 of their papers we have counts for
28 papers
Hybrid cat-transmon architecture for scalable, hardware-efficient quantum error correction
Connor T. Hann, Kyungjoo Noh, Harald Putterman +6
Dissipative cat qubits are a promising physical platform for quantum computing, since their large noise bias can enable more hardware-efficient quantum error correction. In this wo…
Closest lattice point decoding for multimode Gottesman-Kitaev-Preskill codes
Mao Lin, Christopher Chamberland, Kyungjoo Noh
Quantum error correction (QEC) plays an essential role in fault-tolerantly realizing quantum algorithms of practical interest. Among different approaches to QEC, encoding logical q…
Real-Time Decoding for Fault-Tolerant Quantum Computing: Progress, Challenges and Outlook
Francesco Battistel, Christopher Chamberland, Kauser Johar +5
Quantum computing is poised to solve practically useful problems which are computationally intractable for classical supercomputers. However, the current generation of quantum comp…
New magic state distillation factories optimized by temporally encoded lattice surgery
Prithviraj Prabhu, Christopher Chamberland
Fault-tolerant quantum computers, with error correction implemented using topological codes, will most likely require lattice surgery protocols in order to implement a universal ga…
Techniques for combining fast local decoders with global decoders under circuit-level noise
Christopher Chamberland, Luis Goncalves, Prasahnt Sivarajah +2
Implementing algorithms on a fault-tolerant quantum computer will require fast decoding throughput and latency times to prevent an exponential increase in buffer times between the…
A circuit-level protocol and analysis for twist-based lattice surgery
Christopher Chamberland, Earl T. Campbell
Lattice surgery is a measurement-based technique for performing fault-tolerant quantum computation in two dimensions. When using the surface code, the most general lattice surgery…
Decoding Merged Color-Surface Codes and Finding Fault-Tolerant Clifford Circuits Using Solvers for Satisfiability Modulo Theories
Noah Shutty, Christopher Chamberland
Universal fault-tolerant quantum computers will require the use of efficient protocols to implement encoded operations necessary in the execution of algorithms. In this work, we sh…
Universal quantum computing with twist-free and temporally encoded lattice surgery
Christopher Chamberland, Earl T. Campbell
Lattice surgery protocols allow for the efficient implementation of universal gate sets with two-dimensional topological codes where qubits are constrained to interact with one ano…
Low overhead fault-tolerant quantum error correction with the surface-GKP code
Kyungjoo Noh, Christopher Chamberland, Fernando G. S. L. Brandão
Fault-tolerant quantum error correction is essential for implementing quantum algorithms of significant practical importance. In this work, we propose a highly effective use of the…
A fault-tolerant continuous-variable measurement-based quantum computation architecture
Mikkel V. Larsen, Christopher Chamberland, Kyungjoo Noh +2
Continuous variable measurement-based quantum computation on cluster states has in recent years shown great potential for scalable, universal, and fault-tolerant quantum computatio…
Building a fault-tolerant quantum computer using concatenated cat codes
Christopher Chamberland, Kyungjoo Noh, Patricio Arrangoiz-Arriola +13
We present a comprehensive architectural analysis for a proposed fault-tolerant quantum computer based on cat codes concatenated with outer quantum error-correcting codes. For the…
Resource-Efficient Quantum Computing by Breaking Abstractions
Yunong Shi, Pranav Gokhale, Prakash Murali +11
Building a quantum computer that surpasses the computational power of its classical counterpart is a great engineering challenge. Quantum software optimizations can provide an acce…
Very low overhead fault-tolerant magic state preparation using redundant ancilla encoding and flag qubits
Christopher Chamberland, Kyungjoo Noh
The overhead cost of performing universal fault-tolerant quantum computation for large scale quantum algorithms is very high. Despite several attempts at alternative schemes, magic…
Triangular color codes on trivalent graphs with flag qubits
Christopher Chamberland, Aleksander Kubica, Theodore J. Yoder +1
The color code is a topological quantum error-correcting code supporting a variety of valuable fault-tolerant logical gates. Its two-dimensional version, the triangular color code,…
Fault-tolerant bosonic quantum error correction with the surface-GKP code
Kyungjoo Noh, Christopher Chamberland
Bosonic quantum error correction is a viable option for realizing error-corrected quantum information processing in continuous-variable bosonic systems. Various single-mode bosonic…
Topological and subsystem codes on low-degree graphs with flag qubits
Christopher Chamberland, Guanyu Zhu, Theodore J. Yoder +2
In this work we introduce two code families, which we call the heavy hexagon code and heavy square code. Both code families are implemented by assigning physical data and ancilla q…
Fault-tolerant preparation of approximate GKP states
Yunong Shi, Christopher Chamberland, Andrew W. Cross
Gottesman-Kitaev-Preskill (GKP) states appear to be amongst the leading candidates for correcting errors when encoding qubits into oscillators. However the preparation of GKP state…
Fault-tolerant magic state preparation with flag qubits
Christopher Chamberland, Andrew W. Cross
Magic state distillation is one of the leading candidates for implementing universal fault-tolerant logical gates. However, the distillation circuits themselves are not fault-toler…
Flag fault-tolerant error correction, measurement, and quantum computation for cyclic CSS codes
Theerapat Tansuwannont, Christopher Chamberland, Debbie Leung
Flag qubits have recently been proposed in syndrome extraction circuits to detect high-weight errors arising from fewer faults. The use of flag qubits allows the construction of fa…
Deep neural decoders for near term fault-tolerant experiments
Christopher Chamberland, Pooya Ronagh
Finding efficient decoders for quantum error correcting codes adapted to realistic experimental noise in fault-tolerant devices represents a significant challenge. In this paper we…
The Small Stellated Dodecahedron Code and Friends
Jonathan Conrad, Christopher Chamberland, Nikolas P. Breuckmann +1
We explore a distance-3 homological CSS quantum code, namely the small stellated dodecahedron code, for dense storage of quantum information and we compare its performance with the…
Flag fault-tolerant error correction with arbitrary distance codes
Christopher Chamberland, Michael E. Beverland
In this paper we introduce a general fault-tolerant quantum error correction protocol using flag circuits for measuring stabilizers of arbitrary distance codes. In addition to exte…
Error suppression via complementary gauge choices in Reed-Muller codes
Christopher Chamberland, Tomas Jochym-O'Connor
Concatenation of two quantum error correcting codes with complementary sets of transversal gates can provide a means towards universal fault-tolerant computation. We first show tha…
Fault-Tolerant Quantum Computing in the Pauli or Clifford Frame with Slow Error Diagnostics
Christopher Chamberland, Pavithran Iyer, David Poulin
We consider the problem of fault-tolerant quantum computation in the presence of slow error diagnostics, either caused by measurement latencies or slow decoding algorithms. Our sch…