407 citations · 2.2k across the 30 of their papers we have counts for
30 papers
Beyond Unitary Quantum Simulation: Open-System Approaches to Quantum Chemistry toward Quantum Advantage
Michael Marthaler, Elias Zapusek, Florentin Reiter
Quantum simulation is widely regarded as one of the most promising routes to genuine quantum advantage, yet most existing approaches to quantum chemistry are formulated in terms of…
Characterization of coherent errors in gate layers with robustness to Pauli noise
Noah Kaufmann, Ivan Rojkov, Florentin Reiter
Characterization of quantum devices generates insights into their sources of disturbances. State-of-the-art characterization protocols often focus on incoherent noise and eliminate…
Deep learning-based quantum algorithms for solving nonlinear partial differential equations
Lukas Mouton, Florentin Reiter, Ying Chen +1
Partial differential equations frequently appear in the natural sciences and related disciplines. Solving them is often challenging, particularly in high dimensions, due to the "cu…
Two-qubit operations for finite-energy Gottesman-Kitaev-Preskill encodings
Ivan Rojkov, Paul Moser Röggla, Martin Wagener +4
We present techniques for performing two-qubit gates on Gottesman-Kitaev-Preskill (GKP) codes with finite energy, and find that operations designed for ideal infinite-energy codes…
Experimental realization of nonunitary multi-qubit operations
Martin W. van Mourik, Elias Zapusek, Pavel Hrmo +5
We demonstrate a novel experimental toolset that enables irreversible multi-qubit operations on a quantum platform. To exemplify our approach, we realize two elementary nonunitary…
A phonon laser in the quantum regime
T. Behrle, T. L. Nguyen, F. Reiter +7
We demonstrate a trapped-ion system with two competing dissipation channels, implemented independently on two ion species co-trapped in a Paul trap. By controlling coherent spin-os…
Quantum anomaly detection in the latent space of proton collision events at the LHC
Vasilis Belis, Kinga Anna Woźniak, Ema Puljak +7
The ongoing quest to discover new phenomena at the LHC necessitates the continuous development of algorithms and technologies. Established approaches like machine learning, along w…
Nonunitary Gate Operations by Dissipation Engineering
E. Zapusek, A. Javadi, F. Reiter
Irreversible logic is at odds with unitary quantum evolution. Emulating such operations by classical measurements can result in disturbances and high resource demands. To overcome…
Resource-efficient dissipative entanglement of two trapped-ion qubits
Daniel C. Cole, Stephen D. Erickson, Giorgio Zarantonello +7
We demonstrate a simplified method for dissipative generation of an entangled state of two trapped-ion qubits. Our implementation produces its target state faster and with higher f…
Generation of a maximally entangled state using collective optical pumping
M. Malinowski, C. Zhang, V. Negnevitsky +7
We propose and implement a novel scheme for dissipatively pumping two qubits into a singlet Bell state. The method relies on a process of collective optical pumping to an excited l…
Dissipative preparation of W states in trapped ion systems
Daniel C. Cole, Jenny J. Wu, Stephen D. Erickson +4
We present protocols for dissipative entanglement of three trapped-ion qubits and discuss a scheme that uses sympathetic cooling as the dissipation mechanism. This scheme relies on…
Higgs analysis with quantum classifiers
Vasileios Belis, Samuel González-Castillo, Christina Reissel +4
We have developed two quantum classifier models for the classification problem, both of which fall into the category of hybrid quantum-classical algorithms fo…
Bias in error-corrected quantum sensing
Ivan Rojkov, David Layden, Paola Cappellaro +2
The sensitivity afforded by quantum sensors is limited by decoherence. Quantum error correction (QEC) can enhance sensitivity by suppressing decoherence, but it has a side-effect:…
Engineering generalized Gibbs ensembles with trapped ions
Florentin Reiter, Florian Lange, Shreyans Jain +3
The concept of generalized Gibbs ensembles (GGEs) has been introduced to describe steady states of integrable models. Recent advances show that GGEs can also be stabilized in nearl…
High-fidelity dissipative engineering using parametric interactions
E. Doucet, F. Reiter, L. Ranzani +1
Established methods for dissipative state preparation typically rely on resolving resonances, limiting the target state fidelity due to competition between the stabilization mechan…
Dissipative self-interference and robustness of continuous error-correction to miscalibration
Victor V. Albert, Kyungjoo Noh, Florentin Reiter
We derive an effective equation of motion within the steady-state subspace of a large family of Markovian open systems (i.e., Lindbladians) due to perturbations of their Hamiltonia…
Quantum optimal control of the dissipative production of a maximally entangled state
Karl P. Horn, Florentin Reiter, Yiheng Lin +2
Entanglement generation can be robust against noise in approaches that deliberately incorporate dissipation into the system dynamics. The presence of additional dissipation channel…
Cooperative Breakdown of the Oscillator Blockade in the Dicke Model
Florentin Reiter, Thanh Long Nguyen, Jonathan P. Home +1
The Dicke model, which describes the coupling of an ensemble of spins to a harmonic oscillator, is known for its superradiant phase transition, which can both be observed in the gr…
Photon Scattering from a System of Multi-Level Quantum Emitters. II. Application to Emitters Coupled to a 1D Waveguide
Sumanta Das, Vincent E. Elfving, Florentin Reiter +1
In a preceding paper we introduced a formalism to study the scattering of low intensity fields from a system of multi-level emitters embedded in a D dielectric medium. Here we s…
Photon Scattering from a System of Multi-Level Quantum Emitters. I. Formalism
Sumanta Das, Vincent E. Elfving, Florentin Reiter +1
We introduce a formalism to solve the problem of photon scattering from a system of multi-level quantum emitters. Our approach provides a direct solution of the scattering dynamics…
Autonomous Quantum Error Correction and Application to Quantum Sensing with Trapped Ions
F. Reiter, A. S. Sørensen, P. Zoller +1
Quantum-enhanced measurements hold the promise to improve high-precision sensing ranging from the definition of time standards to the determination of fundamental constants of natu…
Preparation of entangled states through Hilbert space engineering
Y. Lin, J. P. Gaebler, F. Reiter +10
Entangled states are a crucial resource for quantum-based technologies such as quantum computers and quantum communication systems (1,2). Exploring new methods for entanglement gen…
Scalable Dissipative Preparation of Many-Body Entanglement
Florentin Reiter, David Reeb, Anders S. Sørensen
We present a technique for the dissipative preparation of highly entangled multiparticle states of atoms coupled to common oscillator modes. By combining local spontaneous emission…
Entanglement and spin squeezing in non-Hermitian phase transitions
Tony E. Lee, Florentin Reiter, Nimrod Moiseyev
We show that non-Hermitian dynamics generate substantial entanglement in many-body systems. We consider the non-Hermitian Lipkin-Meshkov-Glick model and show that its phase transit…