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Article
Time-resolved Coulomb collision of single electrons
A series of recent experiments have shown that collision of ballistic electrons in semiconductors can be used to probe the indistinguishability of single-electron wavepackets. Perhaps surprisingly, their Coulo...
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Article
Open AccessTwo-particle time-domain interferometry in the fractional quantum Hall effect regime
Quasi-particles are elementary excitations of condensed matter quantum phases. Demonstrating that they keep quantum coherence while propagating is a fundamental issue for their manipulation for quantum informa...
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Article
Open AccessNew signatures of the spin gap in quantum point contacts
One dimensional semiconductor systems with strong spin-orbit interaction are both of fundamental interest and have potential applications to topological quantum computing. Applying a magnetic field can open a ...
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Article
Open AccessContinuous-variable tomography of solitary electrons
A method for characterising the wave-function of freely-propagating particles would provide a useful tool for develo** quantum-information technologies with single electronic excitations. Previous continuous...
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Article
Open AccessMomentum-dependent power law measured in an interacting quantum wire beyond the Luttinger limit
Power laws in physics have until now always been associated with a scale invariance originating from the absence of a length scale. Recently, an emergent invariance even in the presence of a length scale has b...
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Article
Open AccessControlled spatial separation of spins and coherent dynamics in spin-orbit-coupled nanostructures
The spatial separation of electron spins followed by the control of their individual spin dynamics has recently emerged as an essential ingredient in many proposals for spin-based technologies because it would...
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Article
A semiconductor photon-sorter
The nonlinear optical response of a single quantum dot can be used to separate the one- and two-photon components of a weak laser beam.
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Article
Open AccessNonlinear spectra of spinons and holons in short GaAs quantum wires
One-dimensional electronic fluids are peculiar conducting systems, where the fundamental role of interactions leads to exotic, emergent phenomena, such as spin-charge (spinon-holon) separation. The distinct lo...
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Article
Few-second-long correlation times in a quantum dot nuclear spin bath probed by frequency-comb nuclear magnetic resonance spectroscopy
Using a frequency-comb nuclear magnetic resonance spectroscopy technique it is possible to probe the fluctuations in the nuclear spin bath of a self-assembled quantum dot and reveal long nuclear spin correlati...
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Article
Open AccessUltra-low-power hybrid light–matter solitons
New functionalities in nonlinear optics will require systems with giant optical nonlinearity as well as compatibility with photonic circuit fabrication techniques. Here we introduce a platform based on strong ...
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Article
Harvesting dissipated energy with a mesoscopic ratchet
The search for new efficient thermoelectric devices converting waste heat into electrical energy is of major importance. The physics of mesoscopic electronic transport offers the possibility to develop a new g...
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Article
Detecting noise with shot noise using on-chip photon detector
The high-frequency radiation emitted by a quantum conductor presents a rising interest in quantum physics and condensed matter. However, its detection with microwave circuits is challenging. Here, we propose t...
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Article
All-electric all-semiconductor spin field-effect transistors
Two quantum point contacts are used to respectively inject and detect spins by purely electrical means in an all-semiconductor spin transistor.
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Article
Electric control of the spin Hall effect by intervalley transitions
Controlling spin-related material properties by electronic means is a key step towards future spintronic technologies. The spin Hall effect (SHE) has become increasingly important for generating, detecting and...
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Article
Coherent dynamics of a telecom-wavelength entangled photon source
Quantum networks can interconnect remote quantum information processors, allowing interaction between different architectures and increasing net computational power. Fibre-optic telecommunications technology o...
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Article
Quantum teleportation of laser-generated photons with an entangled-light-emitting diode
Quantum teleportation can transfer information between physical systems, which is essential for engineering quantum networks. Of the many technologies being investigated to host quantum bits, photons have obvi...
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Article
Quantum teleportation using a light-emitting diode
Teleportation of optical qubits can enable reliable logic operations in massively parallel quantum computers, as well as the formation of secure quantum networks. Photon teleportation has previously used laser...
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Article
Towards a quantum representation of the ampere using single electron pumps
Electron pumps generate a macroscopic electric current by controlled manipulation of single electrons. Despite intensive research towards a quantum current standard over the last 25 years, making a fast and ac...
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Article
On-demand single-electron transfer between distant quantum dots
Electrons strongly interact with other electrons and their environment, making it extremely difficult to isolate and detect a single moving electron in a similar way to single photons in quantum optics experim...
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Article
Electric-field-induced coherent coupling of the exciton states in a single quantum dot
The ability to generate entangled photon pairs from a quantum dot critically depends on the size of the fine-structure splitting of its exciton states. A demonstration of the ability to tune this splitting wit...
