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View article: Non-equilibrium critical scaling and universality in a quantum simulator
Non-equilibrium critical scaling and universality in a quantum simulator Open
Universality and scaling laws are hallmarks of equilibrium phase transitions and critical phenomena. However, extending these concepts to non-equilibrium systems is an outstanding challenge. Despite recent progress in the study of dynamica…
View article: Simulating Meson Scattering on Spin Quantum Simulators
Simulating Meson Scattering on Spin Quantum Simulators Open
Studying high-energy collisions of composite particles, such as hadrons and nuclei, is an outstanding goal for quantum simulators. However, preparation of hadronic wave packets has posed a significant challenge, due to the complexity of ha…
View article: String-Breaking Dynamics in Quantum Adiabatic and Diabatic Processes
String-Breaking Dynamics in Quantum Adiabatic and Diabatic Processes Open
Confinement prohibits isolation of color charges, e.g., quarks, in nature via a process called string breaking: the separation of two charges results in an increase in the energy of a color flux, visualized as a string, connecting those ch…
View article: Observation of string-breaking dynamics in a quantum simulator
Observation of string-breaking dynamics in a quantum simulator Open
The spontaneous formation of particle pairs is one of the most intriguing phenomena in nature. A canonical example is when the potential energy between two elementary particles increases with their separation, as if the particles were conf…
View article: Observation of string-breaking dynamics in a quantum simulator
Observation of string-breaking dynamics in a quantum simulator Open
Spontaneous particle-pair formation is a fundamental phenomenon in nature. It can, for example, appear when the potential energy between two particles increases with separation, as if they were connected by a tense string. Beyond a critica…
View article: Simulating Meson Scattering on Spin Quantum Simulators
Simulating Meson Scattering on Spin Quantum Simulators Open
Studying high-energy collisions of composite particles, such as hadrons and nuclei, is an outstanding goal for quantum simulators. However, preparation of hadronic wave packets has posed a significant challenge, due to the complexity of ha…
View article: Observation of a finite-energy phase transition in a one-dimensional quantum simulator
Observation of a finite-energy phase transition in a one-dimensional quantum simulator Open
One of the most striking many-body phenomena in nature is the sudden change of macroscopic properties as the temperature or energy reaches a critical value. Such equilibrium transitions have been predicted and observed in two and three spa…
View article: Non-equilibrium critical scaling and universality in a quantum simulator
Non-equilibrium critical scaling and universality in a quantum simulator Open
Universality and scaling laws are hallmarks of equilibrium phase transitions and critical phenomena1-3. However, extending these concepts to non-equilibrium systems is an outstanding challenge. Despite recent progress in the study of dynam…
View article: Non-equilibrium critical scaling and universality in a quantum simulator
Non-equilibrium critical scaling and universality in a quantum simulator Open
Universality and scaling laws are hallmarks of equilibrium phase transitions and critical phenomena. However, extending these concepts to non-equilibrium systems is an outstanding challenge. Despite recent progress in the study of dynamica…
View article: Engineering Dynamically Decoupled Quantum Simulations with Trapped Ions
Engineering Dynamically Decoupled Quantum Simulations with Trapped Ions Open
An external drive can improve the coherence of a quantum many-body system by averaging out noise sources. It can also be used to realize models that are inaccessible in the static limit, through Floquet Hamiltonian engineering. The full po…
View article: Engineering dynamically decoupled quantum simulations with trapped ions
Engineering dynamically decoupled quantum simulations with trapped ions Open
An external drive can improve the coherence of a quantum many-body system by averaging out noise sources. It can also be used to realize models that are inaccessible in the static limit, through Floquet Hamiltonian engineering. The full po…
View article: Quantum approximate optimization of the long-range Ising model with a trapped-ion quantum simulator
Quantum approximate optimization of the long-range Ising model with a trapped-ion quantum simulator Open
Significance Variational quantum algorithms combine quantum resources with classical optimization methods, providing a promising approach to solve both quantum many-body and classical optimization problems. A crucial question is how variat…
View article: Many-Body Dephasing in a Trapped-Ion Quantum Simulator
Many-Body Dephasing in a Trapped-Ion Quantum Simulator Open
How a closed interacting quantum many-body system relaxes and dephases as a function of time is a fundamental question in thermodynamic and statistical physics. In this Letter, we analyze and observe the persistent temporal fluctuations af…
View article: Efficient Ground-State Cooling of Large Trapped-Ion Chains with an Electromagnetically-Induced-Transparency Tripod Scheme
Efficient Ground-State Cooling of Large Trapped-Ion Chains with an Electromagnetically-Induced-Transparency Tripod Scheme Open
We report the electromagnetically-induced-transparency (EIT) cooling of a large trapped ^{171}Yb^{+} ion chain to the quantum ground state. Unlike conventional EIT cooling, we engage a four-level tripod structure and achieve fast sub-Doppl…
View article: Quantum Approximate Optimization with a Trapped-Ion Quantum Simulator
Quantum Approximate Optimization with a Trapped-Ion Quantum Simulator Open
Quantum computers and simulators may offer significant advantages over their
classical counterparts, providing insights into quantum many-body systems and
possibly solving exponentially hard problems, such as optimization and
satisfiabilit…
View article: Phase matching in $\beta$-barium borate crystals for spontaneous parametric down-conversion.
Phase matching in $\beta$-barium borate crystals for spontaneous parametric down-conversion. Open
Spontaneous parametric down-conversion (SPDC) is the most widely used process\nfor generating entangled photon pairs. In SPDC, a pump photon interacts with a\nnonlinear optical crystal and splits into two entangled photons called the\nsign…