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On-chip levitation of ferromagnetic microparticles
Martijn Janse, M. Luisa Mattana, Julian van Doorn +4
Levitation of microscopic objects in vacuum combines exceptional environmental isolation with precise control of their dynamics, pushing the limits of sensing and macroscopic quant…
Superconducting flux concentrator coils for levitation of particles in the Meissner state
Robert Smit, Martijn Janse, Eli van der Bent +5
Magnetic levitation of superconductors is a promising platform to study quantum mechanics in the large-mass limit. One major limitation is the weak trapping potential, which result…
Characterisation of a levitated sub-mg ferromagnetic cube in a planar alternating-current magnetic Paul trap
Martijn Janse, Eli van der Bent, Mart Laurman +2
Microscopic levitated objects are a promising platform for inertial sensing, testing gravity at small scales, optomechanics in the quantum regime, and large-mass superpositions. Ho…
Current experimental upper bounds on spacetime diffusion
Martijn Janse, Dennis G. Uitenbroek, Loek van Everdingen +3
A consistent theory describing the dynamics of quantum systems interacting on a classical space-time was recently put forward by Oppenheim et al..[1, 2]. Quantum states may retain…
Design and low-temperature characterization of a tunable microcavity for diamond-based quantum networks
S. Bogdanovic, S. B. van Dam, C. Bonato +8
We report on the fabrication and characterization of a Fabry-Perot microcavity enclosing a thin diamond membrane at cryogenic temperatures. The cavity is designed to enhance resona…
Loophole-free Bell test using electron spins in diamond: second experiment and additional analysis
B. Hensen, N. Kalb, M. S. Blok +11
The recently reported violation of a Bell inequality using entangled electronic spins in diamonds (Hensen et al., Nature 526, 682-686) provided the first loophole-free evidence aga…
Repeated quantum error correction on a continuously encoded qubit by real-time feedback
Julia Cramer, Norbert Kalb, M. Adriaan Rol +6
Reliable quantum information processing in the face of errors is a major fundamental and technological challenge. Quantum error correction protects quantum states by encoding a log…
Unconditional quantum teleportation between distant solid-state qubits
Wolfgang Pfaff, Bas Hensen, Hannes Bernien +8
Realizing robust quantum information transfer between long-lived qubit registers is a key challenge for quantum information science and technology. Here we demonstrate unconditiona…
Heralded entanglement between solid-state qubits separated by 3 meters
H. Bernien, B. Hensen, W. Pfaff +8
Quantum entanglement between spatially separated objects is one of the most intriguing phenomena in physics. The outcomes of independent measurements on entangled objects show corr…