B737-700
Air Traffic Control Fully Certified
ATC Issue All Types; Inflight Event / Encounter Wake Vortex Encounter
General None Reported / Taken
Environment - Non Weather Related; Procedure
B737 checked on frequency level at FL390 and after receiving my acknowledgement; asked if there was any traffic ahead of him and higher. I informed the pilot that I had no traffic anywhere close to him. The pilot then informed me that he hit a bad patch of clear air turbulence about 20 miles back and that it was very moderate and lasted about 5 seconds and that it was lucky that no one got injured; because it felt like the aircraft was hit by a truck on the side. Because of the 20 mile back report; I expanded out and noticed a track in SLC34 at FL400. I called SLC34 and inquired about the aircraft's type and discovered the aircraft was an A380. I informed [B737 pilot] of the aircraft and he remarked that the winds did make it favorable for the wake turbulence to remain there.  Upon reviewing the FALCON data; it was discovered that the A380 was on a converging course and passed 13 miles in front of and about 5 miles laterally from the B737 on an angle that took the B737 into the track of the A380 about 15 miles behind.  Not sure if there is a solution; other than increased separation of 2;000 feet below and 10 miles. Not even sure 2;000 feet is enough for the super aircraft.
Center controller reported B737 had a wake vortex encounter with an A380 that in the B737 pilot's words 'felt like [we were] hit by a truck.' Controller noted the B737 was about 13 miles in trail and separated by 1;000 feet; and wondered whether the separation standards should be increased for Super Aircraft.