In a bowl, gently mix the strawberries and sugar and let sit at room temperature for at least 15 minutes and up to 1 hour.
Using an electric mixer, whip the cream just until it thickens. Add the strawberry jam and continue to whip until soft peaks form, 30 seconds to 1 minute more.
Slice the pound cake into 1-inch thick pieces. Place 2 cake slices on each serving plate. Divide the strawberries among the plates, spooning them onto the middle of the pound cake. Top each serving with a generous dollop of the strawberry cream.