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View article: Minimizing the number of edges in LC-equivalent graph states
Minimizing the number of edges in LC-equivalent graph states Open
Graph states are a powerful class of entangled states with numerous applications in quantum communication and quantum computation. Local Clifford (LC) operations that map one graph state to another can alter the structure of the correspond…
View article: Generalized Quantum Repeater Graph States
Generalized Quantum Repeater Graph States Open
All-photonic quantum repeaters are essential for establishing long-range quantum entanglement. Within repeater nodes, reliably performing entanglement swapping is a key component of scalable quantum communication. To tackle the challenge o…
View article: Achievability of Covert Quantum Communication
Achievability of Covert Quantum Communication Open
We explore covert communication of qubits over an arbitrary quantum channel. Covert communication conceals the transmissions in the channel noise, ensuring that an adversary is unable to detect their presence. We show the achievability of …
View article: Practical hybrid PQC-QKD protocols with enhanced security and performance
Practical hybrid PQC-QKD protocols with enhanced security and performance Open
Quantum resistance is vital for emerging cryptographic systems as quantum technologies continue to advance towards large-scale, fault-tolerant quantum computers. Resistance may be offered by quantum key distribution (QKD), which provides i…
View article: Role of Error Syndromes in Teleportation Scheduling
Role of Error Syndromes in Teleportation Scheduling Open
Quantum teleportation enables quantum information transmission, but requires distribution of entangled resource states. Unfortunately, decoherence, caused by environmental interference during quantum state storage, can degrade quantum stat…
View article: Generalized Quantum Repeater Graph States
Generalized Quantum Repeater Graph States Open
All-photonic quantum repeaters are essential for establishing long-range quantum entanglement. Within repeater nodes, reliably performing entanglement swapping is a key component of scalable quantum communication. To tackle the challenge o…
View article: Game Design Inspired by Quantum Physics: A Case Study on The Quantum Photo Booth
Game Design Inspired by Quantum Physics: A Case Study on The Quantum Photo Booth Open
In this paper, we explain the conceptual development of the STAGE Lab Quantum Casino (a.k.a. the STAGE Lab Quantum Arcade), one of the Lab's most recent artistic endeavors about quantum physics. This work consists of a series of card and d…
View article: Resource-efficient fault-tolerant one-way quantum repeater with code concatenation
Resource-efficient fault-tolerant one-way quantum repeater with code concatenation Open
One-way quantum repeaters where loss and operational errors are counteracted by quantum error-correcting codes can ensure fast and reliable qubit transmission in quantum networks. It is crucial that the resource requirements of such repeat…
View article: All-photonic Gottesman-Kitaev-Preskill–qubit repeater using analog-information-assisted multiplexed entanglement ranking
All-photonic Gottesman-Kitaev-Preskill–qubit repeater using analog-information-assisted multiplexed entanglement ranking Open
Long-distance quantum communication will require the use of quantum repeaters to overcome the exponential attenuation of signal with distance. One class of such repeaters utilizes quantum error correction to overcome losses in the communic…
View article: Resource-efficient fault-tolerant one-way quantum repeater with code concatenation
Resource-efficient fault-tolerant one-way quantum repeater with code concatenation Open
One-way quantum repeaters where loss and operational errors are counteracted by quantum error correcting codes can ensure fast and reliable qubit transmission in quantum networks. It is crucial that the resource requirements of such repeat…
View article: All-photonic GKP-qubit repeater using analog-information-assisted multiplexed entanglement ranking
All-photonic GKP-qubit repeater using analog-information-assisted multiplexed entanglement ranking Open
Long distance quantum communication will require the use of quantum repeaters to overcome the exponential attenuation of signal with distance. One class of such repeaters utilizes quantum error correction to overcome losses in the communic…
View article: Analysis of multipartite entanglement distribution using a central quantum-network node
Analysis of multipartite entanglement distribution using a central quantum-network node Open
We study the performance (rate and fidelity) of distributing multipartite entangled states in a quantum network through the use of a central node. Specifically, we consider the scenario where the multipartite entangled state is first prepa…
View article: Finite Rate QLDPC-GKP Coding Scheme that Surpasses the CSS Hamming Bound
Finite Rate QLDPC-GKP Coding Scheme that Surpasses the CSS Hamming Bound Open
Quantum error correction has recently been shown to benefit greatly from specific physical encodings of the code qubits. In particular, several researchers have considered the individual code qubits being encoded with the continuous variab…
View article: Experimental study of quantum uncertainty from lack of information
Experimental study of quantum uncertainty from lack of information Open
View article: Analysis of Multipartite Entanglement Distribution using a Central Quantum-Network Node
Analysis of Multipartite Entanglement Distribution using a Central Quantum-Network Node Open
We study the performance (rate and fidelity) of distributing multipartite entangled states in a quantum network through the use of a central node. Specifically, we consider the scenario where the multipartite entangled state is first prepa…
View article: Finite Rate QLDPC-GKP Coding Scheme that Surpasses the CSS Hamming Bound
Finite Rate QLDPC-GKP Coding Scheme that Surpasses the CSS Hamming Bound Open
Quantum error correction has recently been shown to benefit greatly from specific physical encodings of the code qubits. In particular, several researchers have considered the individual code qubits being encoded with the continuous variab…
View article: Quantum uncertainty from lack of information: experimental verification
Quantum uncertainty from lack of information: experimental verification Open
Quantum uncertainty is a well-known property of quantum mechanics that states the impossibility of predicting measurement outcomes of multiple incompatible observables simultaneously. In contrast, the uncertainty in the classical domain co…
View article: Replication Data for: NetSquid, a discrete-event simulation platform for quantum networks
Replication Data for: NetSquid, a discrete-event simulation platform for quantum networks Open
Data presented in the paper "NetSquid, a discrete-event simulation platform for quantum networks" (https://arxiv.org/abs/2010.12535). This file contains four compressed tarballs (tar.gz files), each containing data of a particular use case…
View article: Quantum repeaters based on concatenated bosonic and discrete-variable quantum codes
Quantum repeaters based on concatenated bosonic and discrete-variable quantum codes Open
We propose an architecture of quantum-error-correction-based quantum repeaters that combines techniques used in discrete- and continuous-variable quantum information. Specifically, we propose to encode the transmitted qubits in a concatena…
View article: NetSquid, a discrete-event simulation platform for quantum networks
NetSquid, a discrete-event simulation platform for quantum networks Open
In order to bring quantum networks into the real world, we would like to determine the requirements of quantum network protocols including the underlying quantum hardware. Since sufficiently detailed architecture proposals are generally to…
View article: Key rates for quantum key distribution protocols with asymmetric noise
Key rates for quantum key distribution protocols with asymmetric noise Open
We consider the asymptotic key rates achieved in the simplest quantum key distribution protocols, namely, the BB84 and the six-state protocols when nonuniform noise is present in the system. We first observe that higher qubit error rates d…
View article: Distributed Routing in a Quantum Internet
Distributed Routing in a Quantum Internet Open
We develop new routing algorithms for a quantum network with noisy quantum devices such that each can store a small number of qubits. We thereby consider two models for the operation of such a network. The first is a continuous model, in w…
View article: Building blocks of quantum repeater networks
Building blocks of quantum repeater networks Open
View article: Near-term quantum-repeater experiments with nitrogen-vacancy centers: Overcoming the limitations of direct transmission
Near-term quantum-repeater experiments with nitrogen-vacancy centers: Overcoming the limitations of direct transmission Open
Quantum channels enable the implementation of communication tasks\ninaccessible to their classical counterparts. The most famous example is the\ndistribution of secret key. However, in the absence of quantum repeaters, the\nrate at which t…
View article: Optimizing practical entanglement distillation
Optimizing practical entanglement distillation Open
The goal of entanglement distillation is to turn a large number of weakly entangled states into a smaller number of highly entangled ones. Practical entanglement distillation schemes offer a trade-off between the fidelity to the target sta…
View article: Realistic parameter regimes for a single sequential quantum repeater
Realistic parameter regimes for a single sequential quantum repeater Open
Quantum key distribution allows for the generation of a secret key between distant parties connected by a quantum channel such as optical fibre or free space. Unfortunately, the rate of generation of a secret key by direct transmission is …
View article: Quantum preparation uncertainty and lack of information
Quantum preparation uncertainty and lack of information Open
The quantum uncertainty principle famously predicts that there exist measurements that are inherently incompatible, in the sense that their outcomes cannot be predicted simultaneously. In contrast, no such uncertainty exists in the classic…
View article: Where does quantum uncertainty come from
Where does quantum uncertainty come from Open
The quantum uncertainty principle famously predicts that there exist measurements that are inherently incompatible, in the sense that their outcomes cannot be predicted simultaneously. In contrast, no such uncertainty exists in the classic…