[science4sail]

If you're okay with just a flyby of the Voyager probes though, then you can use a laser sail. Breakthrough Starshot[1] is aiming for 60,000 km/s of delta-v. Lightsails have already been demonstrated several times in practice[2].

[1] https://en.wikipedia.org/wiki/Breakthrough_Starshot [2] https://en.wikipedia.org/wiki/Solar_sail#Projects_operating_...

[chuckadams]

> Lightsails have already been demonstrated several times in practice

Solar sails, yes. Starshot needs a Death Star Laser that makes the NIF look like a cat toy.