Department of Physics, McCullough Building, Stanford University, Stanford, California 94305, USA.
Phys Rev Lett. 2009 Dec 4;103(23):235301. doi: 10.1103/PhysRevLett.103.235301. Epub 2009 Dec 3.
The Majorana fermion, which can be useful for topological quantum computation, has eluded detection. (3)He-B, recently shown to be a time-reversal invariant topological superfluid, has a gapless Majorana fermion surface state. We show here that an electron spin relaxation experiment can detect this surface state--its Majorana nature through the Zeeman field direction dependence of the relaxation time 1/T(1) proportional, proportional to sin(2)theta, where theta is the angle between the field and the surface normal. We propose an experimental setup where an electron inside a nanobubble is injected below the (3)He liquid surface.
马约拉纳费米子可用于拓扑量子计算，但其一直难以被探测到。（3）He-B 最近被证明是一个时间反演不变的拓扑超流体，具有无能隙的马约拉纳费米子表面态。我们在这里表明，电子自旋弛豫实验可以通过弛豫时间 1/T(1)与磁场方向的依赖关系来探测到这种表面态——其马约拉纳性质，1/T(1)与 sin(2)theta 成正比，其中 theta 是磁场与表面法线之间的夹角。我们提出了一种实验方案，即在（3）He 液面上方将一个纳米气泡中的电子注入。
