The B phase of superfluid 3He can be cooled into the pure superfluid regime, where the
thermal quasiparticle density is negligible. The bulk superfluid is surrounded by a quantum …

We have studied the power dependence of superfluid Helmholtz resonators in flat (750 and
1800 nm) rectangular channels. In the A phase of superfluid He 3, we observe a nonlinear …

Under suitable experimental conditions, collective spin-wave excitations, magnons, form a
Bose–Einstein condensate (BEC), where the spins precess with a globally coherent phase …

Since the discovery of superfluids in the early 20th century, ballistic phenomena have also
been observed in chemistry and biochemistry. They are unsolved problems and contradict …

We examine the discontinuous first-order superfluid He 3 A to B transition in the vicinity of
the polycritical point (2.232 mK and 21.22 bar). We find path-dependent transitions: cooling …

A time crystal is a macroscopic quantum system in periodic motion in its ground state. In our
experiments, two coupled time crystals consisting of spin-wave quasiparticles (magnons) …

In quantum optomechanics, finding materials and strategies to limit losses has been crucial
to the progress of the field. Recently, superfluid 4 He was proposed as a promising …

Evidence of fluctuations in transport have long been predicted in 3He. They are expected to
contribute only within 100 μ K of T c and play a vital role in the theoretical modeling of …

We present a new mechanical probe to study the properties of superfluid 3He at microkelvin
temperatures down to 100 μK. The setup consists of a set of coils for levitating a …

We present the manufacturing process of a (24.5× 100) μm 2-sized on-chip flow channel
intended for flow experiments with normal and superfluid phases of 4 He and showcase …